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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

Green film on water

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21 Nov 2013 21:54 - 21 Nov 2013 22:03 #1 by Jim (Jim Lawlor)
Has anyone else ever encountered this?

One of my tanks has a green film of what seems like algae on the surface. There's no nitrates (tested with 2 different kits) no algae growing in rest of tank, plants and fish seem fine. I've tried to scoop it off, but it comes back.

I've switched the wood and rocks with other tanks - the other tanks stay fine and this one keeps the green stuff. I've deliberately contaminated other tanks with it, but it doesn't grow.

I've also dosed the problem tank with easycarbo to no avail.

The only different I can find is this tank has two large filters. Is it possible to "overfilter" & cause this? Is it even algae or a bacteria?

Any advice most welcome!
Last edit: 21 Nov 2013 22:03 by Jim (Jim Lawlor).

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22 Nov 2013 02:03 #2 by platty252 (Darren Dalton)
You can get both algae and bacteria growing on the surface causing a bio film.

If your Nitrate is 0ppm I wonder if adding some Nitrate might help? It can work on cyanobacteria. Drop in I will give you some. It might be worth experiment with.

If its external filters your using you can use symecmicro from JBL (great stuff) To clear both algae and some bacteria (depending on size).
You can drop the water level, alter the filter to give plenty of surface agitation. The filter will take it in and it will get caught in the symecmicro (filters down to 1 micro Siemen).

If its internal filters try soak it up with paper towels.

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22 Nov 2013 13:05 #3 by Jim (Jim Lawlor)
Thanks Darren.

One of the filters is an internal box and the inlet is already at the surface. I might give the symec micro a go in here as the floss I'm using is probably letting the stuff through.

Both filters (incl external tetratec) are outputting onto the water surface but only clearing the area immediately nearby. I've been soaking it up with newspaper as it mostly sticks to that but it returns to complete cover within 2 days.

See you at the weekend for the symec micro!

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