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
will cuba grow without co2
- fishmad1234 (Craig Coyle)
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regards craig
at the end of the day it becomes nite
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- BillG (Bill Gray)
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No experience of the plant myself but looks like you should be ok with the substrate and light levels.
requires a lot of nitrogen as well as carbon. There will be a lot of carbon available to the plant from organic material in your substrate initially, and possibly up to 1 to 2 years depending on the organic content of the substrate. The nigtorgen will come from the nitrates generated by the fish in your set-up, the plant will compete for nitrates with the bacteria in your filter. The organic content of your substrate will also be replenished by fish waste as its broken down, this will also help with the available carbon for the plant. You may eventually need to look at using easy carbo but sohuld not be for quite a while.
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- fishmad1234 (Craig Coyle)
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at the end of the day it becomes nite
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- NosIreland (Andrius Kozeniauskas)
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You can have CO2 in shrimp tank and shrimps like slightly acidic water.
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- omen (Conor)
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Also, some shrimp will be affected by co2 injection, and ferts. Such as CRS. RCS or Sakura shrimp would be fine however.
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- manius112 (Mariusz Kaminski)
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I'm not using any fertilizers or additives. Only shrimps,food and water changes.
By the fact at the moment its growing better than one in my nano tanks.
I would say - I recommend CO2 for hemiantus and over 0,8W/L of light but as you know Craig you can grow this without. (or maybe its only me thinking its growing healthy??)
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- AquaticGardenDan (Daniel Madziag)
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Why I'm thinking so , is the fact that cuba is geting most of nutritients from water not from substrate, good substrate releases fertilizers slowly in to the water,
My Cuba in low tech tank gone in week time, water parameters were quite good but substrate wasn't from top shelf.
Cuba is Demanding plant so even with CO2 You might be unsuccessful with growing it

So in my opninion some fertilizers and carbo fert should do for Your Cuba.
I might be wrong but hope that I'm not


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- manius112 (Mariusz Kaminski)
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I beleive that Cuba in Manius tank is on some quality substrate and water paramaters are good enough to grow it without CO2, or I'm completely wrong
Why I'm thinking so , is the fact that cuba is geting most of nutritients from water not from substrate, good substrate releases fertilizers slowly in to the water,
My Cuba in low tech tank gone in week time, water parameters were quite good but substrate wasn't from top shelf.
Cuba is Demanding plant so even with CO2 You might be unsuccessful with growing it
So in my opninion some fertilizers and carbo fert should do for Your Cuba.
I might be wrong but hope that I'm not![]()
Im afraid Dan ya wrong:-( hemiantus cuba in my red cherry tank is groving on aquaart shrimp sand and as ya know this shrimp sand has no fertilisers coz been designed by aqua art for shrimp keepers. Im not using any dry o liquide fertilisers eighter coz I have sakura red shrimps and they cost me over 20€/each so cant risk:-)
Light I have it only 0,64W/L 6500K silvana T5.
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- omen (Conor)
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Oh and Sakura shrimp for 20 each... really...? I must have a house deposit swimming around my tanks then!

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- manius112 (Mariusz Kaminski)
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First time I have heard of HC being grown without co2 or ferts, in fact to the best of my knowledge it is one of the most demanding plants available.
Oh and Sakura shrimp for 20 each... really...? I must have a house deposit swimming around my tanks then!
Omen you more than welcome to see my farm.
You will have chance to see hemiantus cuba growing without any ferts and CO2.
And its red sakura shrimp not sakura shrimp - there is big different between them in price,color and as you know they 2 different species.
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- AquaticGardenDan (Daniel Madziag)
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CO2 is not everything, there is quality of the plant, water paramaters and your skill

As i sed I didn't grow cuba but know from people that some of them grow it without CO2,
and it grow very slow but fine.
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- NosIreland (Andrius Kozeniauskas)
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Manius could you post some pictures of the tank with HC? I would really like to see it.
Omen you more than welcome to see my farm.
You will have chance to see hemiantus cuba growing without any ferts and CO2.
And its red sakura shrimp not sakura shrimp - there is big different between them in price,color and as you know they 2 different species.
thanks
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- fishmad1234 (Craig Coyle)
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craig
at the end of the day it becomes nite
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- manius112 (Mariusz Kaminski)
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Manius could you post some pictures of the tank with HC? I would really like to see it.
Omen you more than welcome to see my farm.
You will have chance to see hemiantus cuba growing without any ferts and CO2.
And its red sakura shrimp not sakura shrimp - there is big different between them in price,color and as you know they 2 different species.
thanks
Im sorry for quality of pix but its only iphone I could use today. Im home tomorrow and Saturday so will try to use my camera to do some nice pix.
Red Sakura tank - over 1 year old HC
Little 20l tank HC over 1 year old
Spare tanks for CRS with 2 months old HC
CRS tanks with HC 2 months old.
It may take time to grow HC without CO2 but it is possible and I thing CO2 its not most important thing for Cuba. Its light make this plant grow healthy.
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- omen (Conor)
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Can you post photos of sakura shrimp you bought, these are mine:
picasaweb.google.com/1146512086398222919...#5670070770918733762
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- manius112 (Mariusz Kaminski)
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I will do my best to catch some red sakura by my camera but coz of hemiantus cuba my camera has problem to do proper pix. even on iphone its very bright.
Soon as will have some time will try to catch few.
I like color on ya sakuras. Looks very nice. I have only few in my tank and they have to stay with normal RC. They breed ok for me but offspring ar not as good as I would like to have. Im going to get some more sakuras next year coz Taiwans are my target so dont have any money:-)
Someone who was visiting me today make good point on my cuba growing without CO2. He said is coz its growing in shrimp tank and shrimps clean leafs and all dirt and he can be right but I have cuba growing in other tanks with only few shrimps and its nice and healthy too.
When I compare to tanks where different is only light (different angle and hight over tank)it makes me sure CO2 is not as important and cant be taken as solution to grow hemiantus cuba.
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- AquaticGardenDan (Daniel Madziag)
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Standard HC in high tech tank with fertz will have way bigger leafes if not pruning regullary, and I see that You don't have that problem

Good job Manius !
Dan.
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