Re: water have a layer of slime after a few days

Originally Posted by
blue33
3ft tank with
7w light and sponge filter?

Growing mushrooms ka? 
Seriously for a 3ft tank you need at least 100W. Even that is considered low for more serious aquascapers. [Some go as high as 288W]
Sponge filter is for fish tanks. Get yourself something that doesn't aerate the tank like canister filter with the return positioned below the water level. This is to maintain the CO2 for as long as possible in the water.
No that I mentioned it. I don't see any CO2.
You can if you dare to fail - Stan Chung
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