Could this be insufficient biological filtration? All I have is a sponge filter in the corner of the tank with an air pump attached to it (its only a 5.5 G tank). Is there possibly not enough water movement?

-eric-

OK. I'll consider adding some snails. But the malodorous smell is somewhat distressing. Sort of sulfer-smelling!

-eric-

I had thought to maybe treat the tank with erythromycin. And this is definitely not BGA. Its white & fuzzy. Its not rampant, but is more noticable around the edges of the suction cups. Its starting to grow on the driftwood again. For the record I'm only using a sponge filter, not a H.O.T. filter...

I thought so. Is there any way I can sterilize it? Its a nice big (and expensive) piece of driftwood, so I'd like to salvage it if possible.

Thanks,

-eric-

I have a smilier phenomenon growing in my tank (also on driftwood). I've taken it out, scrubbed it down, even boiled it for a few hours! It eventually came back, although definitely at a slower growth rate. Its even growing around some suction cups holding the heater and CO2 reactor in place. I'm a ...

OK...as of this morning Phosphate is at @ 0.1 mg/L and 'trates are at @ 10 mg/L. This is roughly at the 10:1 ratio that GG recommends. Yet, I can practically watch filamentatious algae growing. Every few days I try to rake out as much of it as I can (pulls right out) but I just don't get it. I've sh...

Thanks for the link...this is very helpful. Although some of the information on this site seems contrary to what I've read about NPK ratios here in the GWAPA forums. Ghazanfar and others have spoken about dosing Phosphates whereas Chuck's site says dosing Phosphate in a well-lit tank (like mine) is ...

Oh, I have an electronic CO2 dosing system. I keep my PH around 6.5, and CO2 is being added fairly regularly. Believe me...this is one of the first things I tried, followed shortly thereafter by a RO/DI system. At least my hardness is somewhat in check, although still higher than I would like. I'm s...

This leads to another question. How often is everyone testing? Also, how often is everyone dosing? I've been adding a capful of Flourish Nitrogen twice a day (32 Gallon tank) which seems to raise my NO3 a little, but not anywhere near the recommended amount. I've recently bought some KNO3 and K2SO4 ...

I know the LaMotte and Hach tests are highly coveted for their accuracy and whatnot, but is the LaMotte kit suitable for determining the rather high levels of Nitrogen needed for aplanted aquarium? The scale on the LaMotte kit tops out at 10ppm, and I seem to remember reading somewhere that the NO3 ...