Retirement and forum shutdown (17 Jan 2022)
Hi,
John Howell who has managed the forum for years is getting on and wishes to retire from the role of managing it.
Over the years, he has managed the forum through good days and bad days and he has always been fair.
He has managed to bring his passion for fish keeping to the forum and keep it going for so long.
I wish to thank John for his hard work in keeping the forum going.
With John wishing to "retire" from the role of managing the forum and the forum receiving very little traffic, I think we must agree that forum has come to a natural conclusion and it's time to put it to rest.
I am proposing that the forum be made read-only from March 2022 onwards and that no new users or content be created. The website is still registered for several more years, so the content will still be accessible but no new topics or replies will be allowed.
If there is interest from the ITFS or other fish keeping clubs, we may redirect traffic to them or to a Facebook group but will not actively manage it.
I'd like to thank everyone over the years who helped with forum, posted a reply, started a new topic, ask a question and helped a newbie in fish keeping. And thank you to the sponsors who helped us along the away. Hopefully it made the hobby stronger.
I'd especially like to thank John Howell and Valerie Rousseau for all of their contributions, without them the forum would have never been has successful.
Thank you
Darragh Sherwin
plant substrate info NEED HELP LIKE ALWAYS :L
- BlueRam (Sean Crowe)
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as it would be crazy money to fill it all off oliver knott
i need to come up with something else i was thinkin off a few 25L bags off jbl manado as they are about 20 or so for a 25L
and i wouldnt have much to spend on it
although i do love the look off the oliver knott wat can i do wat is not to price but is good to
would the oliver knott be ok on the bottom and then but the jbl manado over it???
this is doing my head in :L:L so if anyone can help it would be great
sean
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- skk123 (shaun)
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- ghart (Greg Hart)
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I have also ordered a custom 5' Clearseal tank but I only intend putting plant substrate in the first six inches from the back and down the sides where I intend to put plants. Kooking at using ADA New Amazonia substrate which is not cheap. For the remainder space I will put in inert gravel so I can continue to Gravel siphon to keep the tank in good condition. Any plants in that area will be growing on bogwood.
Greg.
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- BillG (Bill Gray)
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Setting up a 200L planted myself at present and have been doing a lot of research on the substrate side of things. I plan to use a mix of Oliver Knott, JBL ProFlora and Akadama Bonsai Soil


It is a Japanese volcanic soil which is sintered to remove all organic material, so it is putely nutrients required by plants. It is packed in 14L bags and is primarily spherical about 3 to 4mm in diameter. ITs a dull brown in the bag but almost brick red when wet. I plan to top this mix with Manado along the 2 sides and back of the tank. THe Manado is not a plant substrate as such but it does act as a reservoir for nutrients, absorbing excess nutrients from fish waste etc and releasing them to the plants as required.
I plan to have black volcanic sand in the centre at the back 2/3 of the tank and the whole front will be white silica sand, main planting at back and sides with some foreground planting and lots of mosses on wood and rock in the centre.
The Akadama is anything up to €35 for a 14L bag but I know where you can get it for €14 at present.
PM me if you want the details.
Cheers,
BillG
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- BlueRam (Sean Crowe)
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mixing gravels can be a night mare in the long run i think let me know how yas get on
thanks
sean
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- omen (Conor)
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- BlueRam (Sean Crowe)
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wantin to here back from someone about the oliver knotts looks like ill be fillin the five foor with it
sean
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- davey_c (dave clarke)
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what dept are ye looking for?
Below tank is for sale
my plywood tank build.
www.irishfishkeepers.com/index.php/forum...k-build-diary#137768
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- BlueRam (Sean Crowe)
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wat do u think your self mate would love to have it all oliver knott but it is just going to be to pricey as in if i needed another 30L it would be about 150euro just on that so the would have being 250 on just substrate
would love to here from someone to just how much i would actually need in it and wat is the best depth
sean
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- AquaticGardenDan (Daniel Madziag)
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www.irishfishkeepers.com/index.php/fforu...rate-question#113627
If You want to use Manado and O'Knott use it in other way, substrate on the bottom to feed tha roots and Manado gravel on the top. The way You sad You can put even Play send witch wil be probably cheeper than Manado and have same effect.
Dan.
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- BlueRam (Sean Crowe)
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y doesnt someone just do the oliver knott at about 15 to 20 for a 10L bag hahahahahaha
i am not a fan off sand mate had it in the 260 and i will never use it again it is a pain in the hole
i know wat u are sayin about the Manado on top but they only thing is i like the look off Oknott
if only this was a perfect worls and everything works out as in my head :L
sean
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- davey_c (dave clarke)
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how long were you using the oliver knott in the other tank? are you going to supliment the ferts back into it if your not planning any more? were you using any capsules or anything when you used it? all this should be considered to deciding if you'll need to get more... its not just a matter of reusing it because the goodness within it could be prity low by now and could need replenishing if you get me.
Below tank is for sale
my plywood tank build.
www.irishfishkeepers.com/index.php/forum...k-build-diary#137768
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- BlueRam (Sean Crowe)
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wasnt usen anything as was advised not to that is had everything in it and with the growth rate at the mo is sure doesnt seem like it has lost all its good ness everything from the 180 is gettin moved over to the clearseal think ill have to bite the bullet and just go for the manado over it it is going to kill me to do it tho ha
any iead how much i would need to fill the tank?
wat depth is best
sean
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- BillG (Bill Gray)
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to determine the amount of Manado you need is quite easy

If you plan to have the substrate layer the same depth over the whole tank base use this one.
Substrate volume = (S x W x L) / 1000
S - Substrate depth in cm
W - Tank width in cm
L - Tank Length in cm
If you plan to have the substrate slope front to back, then it’s the same but you need to calculate S
This time S = (F + B ) / 2
F - Substrate depth at the front of the tank in cm
B - Substrate depth at the back of the tank in cm
Once you calculate the total volume required, just deduct the volume of Oliver Knott you have.
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- BlueRam (Sean Crowe)
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just after gettin 2 more 10L bag off Oknott at a great price so hopeing 40L would be enough for the whole tank
sean
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- BlueRam (Sean Crowe)
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thanks
sean
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- ghart (Greg Hart)
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I was trying to use your formula to work out the amount of substrate for my new tank.
The tank 152 cm length and 38cm width.
I want to have the substrate go from 5cm to 2.5cm from back to front.
I get an answer of 43lbs or 18.5Kg substrate required using the formula .
Is my answer correct?
If not..
Can you do the maths for me and show how the the formula is worked for this.
Greg
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- smitas5 (Marius Smitas)
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- BillG (Bill Gray)
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BillG,
I was trying to use your formula to work out the amount of substrate for my new tank.
The tank 152 cm length and 38cm width.
I want to have the substrate go from 5cm to 2.5cm from back to front.
I get an answer of 43lbs or 18.5Kg substrate required using the formula .
Is my answer correct?
If not..
Can you do the maths for me and show how the the formula is worked for this.
Greg
Hi Greg,
Sorry, was not very clear in my post, the formula is to calculate the substrate volume. There is no way to accurately calculate the substrate weight required as it depends on the density and grain / particle size of the material being used. Most substrates are sold by volume, so makes it easier to calculate this way.
Based on the dimensions you listed, you would need 22 litres of substrate. 21.66 to be exact, but don’t think a third of a litre will make a difference.
Cheers,
Bill
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- BlueRam (Sean Crowe)
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sean
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- BillG (Bill Gray)
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any idea on the substrate depth you want to go with? and if you want a slope on it?
no problem doing the calculations, but will help not having to do lots for all possible combinations

The 5 foot tank is 5 x 2 foot? So approx. 152cm x 61cm, so just need the substrate depth

Given that you have 40L of the OK substrate at present, this would give a 4cm level layer over the whole base of the tank, or any of the following combinations of slopes
Front Back
2cm 6cm
2.5cm 5.5cm
3cm 5cm
An extra 10L of the substrate will give you 5.4cm over the whole tank base, or the following with a slope.
Front Back
2cm 8.8cm
2.5cm 8.3cm
3cm 7.8cm
3.5cm 7.3cm
4cm 6.8cm
4.5cm 6.3cm
Cheers,
Bill.
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- BlueRam (Sean Crowe)
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dont really need the slope ill see when i go to put it in wat way i want to do it
next thing is going to aquastape it that will be a mission and a half lol (not something i am really good at):L:L:L
at least i knoe i have enough



and be thinkin i was good at maths hahahaha
thanks again mate
sean
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- BillG (Bill Gray)
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think you will be ok with 4cm all over the base unless you plan to use any plants with huge root systems.
Best of luck with the aquascaping

Here is an aquascaping design aid I found last year and posted at the time, could be useful.
www.theaquatools.com/aquasketcher
Cheers,
Bill
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- BlueRam (Sean Crowe)
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thanks mate
sean
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- ger310 (Ger .)
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Hi Sean,
think you will be ok with 4cm all over the base unless you plan to use any plants with huge root systems.
Best of luck with the aquascapingbased on the previous set-up you did, it should look amazing.
Here is an aquascaping design aid I found last year and posted at the time, could be useful.
www.theaquatools.com/aquasketcher
Cheers,
Bill
Jaysus thanks for that link Bill,its the business so it is

Ger
What do you call a three legged Donkey?
A Wonkey....duh ha

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