I've got a small amount of various algae species (BBA, Clado, GDA) and a persistent scum layer on my water surface.
I've determined both are likely due to high dissolved organics. I'd rather treat the causes than the problems.
Causes of high organics:
Tank stocked to max capacity (1" fish per gallon)
Garden soil ("dirt") substrate has mixed with the sand cap and now dirt is in direct contact with the water column.
You can't really vac your dirt...
I've not found a good routine and method for cleaning my canister filter. I've tried weekly, and I find enough grime in their to suggest it would help, but some people suggest all that brown build up is actually just bacterial growth and is doing more to clean my water than I'm doing by regular cleaning.
Feed fish less? Nope, I already feed only once every 2 to 3 days, and what I feed is eaten within 5 minutes easy.
I could try putting down a new 1 inch layer of Black Diamond? Not sure that would help except it would show me just how much detritus is collecting on the bottom of my tank, and I could potentially vacuum it, though it's much lighter than gravel.
I could try Purigen or activated carbon to try and suck up the free organics?
I could replace all the media in my canister with bio media or, as some do, with those green scrubbing pads?
I'm not looking to increase surface agitation, that is just hiding the cause of the problem.
Lastly, I'm planning on relocating about 1/3rd of the fish to another tank this summer when I have the time to do so. But I'd rather do what I can right now.
Any other ideas? Any experiences with carbon or Purigen being especially helpful to clear up excess organics?
Christian, husband, brother, friend, hobbyist.
Last edited by Blacktetra; 05-06-2019 at 04:10 PM.