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Hi again everyone, and thanks in advance for your help!

I have a 29 gallon with a single small firemouth in it (although I think it might actually be thorichthys ellioti, is there a big difference from the meeki?). I've had him probably a little over two months now, the tank is fully cycled (I'm keeping the nitrates under 10ppm). The problem is that the tank water seems to be somewhat cloudy and green (I have reduced the time the lights are on, but the problem persists). I do regular water changes (usually two 10-15% changes and one 20% change a week). Water is soft yet slightly alkaline (for some reason).

My question is, how should I address this? I considered getting some type of algae-eating fish, but I'm under the impression that this won't address the green water, only algae growing in the tank. I've also heard shrimp can help on the cleaning end, but I don't want to put them in there if my fish is just going to kill them all (I could live with a few casualties, but I want them to have a fighting chance!). what about a snail, would the fish eat that?

As an aside, if I get shrimp or a snail, should I put them in a quarantine tank before adding them? I know this is recommended for fish, but I am unsure about inverts. I have an old 5-gallon I could probably use for that purpose.

Failing other options, should I use a chemical solution? I'd prefer to avoid that if possible, but it just doesn't seem to be clearing up at all, despite the fact that the tank hasn't seen ammonia or nitrate for weeks now.

Thanks again for the help!
 

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I suggest no to all of your remedies. Especially the chemical option.

An algae eating fish will not clear the green water. The shrimp will eventually get eaten and the snails if not eaten could become a nuisance.

I am guessing your tank is adjusting to increased waste from a growing fish or that it is receiving direct sunlight. Even without those factors, Nitrate levels of 10ppm can lead to algae blooms in the water.

A simple remedy could be to put some plants in the tank. Plants would help control the Nitrate level as well as other params u may not want rising in your tank. Also remember to feed the proper amount.

Hope that helps.
 
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