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f1ea · 11-13-2009, 08:02 PM

Hello all,
Hope someone can help me with my BGA issue. My tank's a 200 Gal plain gravel bottom. It is a low tech set up and i am currently dosing:

- 3% Glutaraldehyde, 10 ml daily
- KNO3, 1/5 tsp daily

The tank has only 128W of T8 on for 6hrs a day, but it gets a fair share of indirect sunlight... so far the only algae i am having trouble with is Bluegreen algae on some Ceratophylum submersum and echinodorus leaves, driftwood and on the substrate as a carpet (around the front and sides, there is no BGA on the back substrate). I do about a 10% water change every other day (basically a BGA clean out), but it keeps coming back.

For flow i have a 400 GPH canister filter and a 500 GPH powerhead. They are mainly aimed to circulate the surface (no splash, only small ripples). 2' tall, 8' long, 20" deep.

I am planning on a 50% water change/BGA clean out and a 3 day blackout. But for the long term improvement:

1) Given i am not injecting CO2, would it be appropriate to add some airstones (or actually an airline w/ small holes running along the substrate) to aerate the bottom; or would it be better to add another powerhead to circulate around the bottom (tank has angels, so they dont really love the current)?

2) increase KNO3?

3) 50% water change every 2 weeks?

4) Any creature to eat this stuff??

Thanks very much in advance!

Here's some pics:

11-13-2009, 08:02 PM	#1
f1ea Algae Grower (View User Tanks) PTrader: (0/0%) Join Date: Jul 2009 Location: Punta Cana, Dom. Rep. Posts: 58	Airstone(s) to help with BGA? Hello all, Hope someone can help me with my BGA issue. My tank's a 200 Gal plain gravel bottom. It is a low tech set up and i am currently dosing: - 3% Glutaraldehyde, 10 ml daily - KNO3, 1/5 tsp daily The tank has only 128W of T8 on for 6hrs a day, but it gets a fair share of indirect sunlight... so far the only algae i am having trouble with is Bluegreen algae on some Ceratophylum submersum and echinodorus leaves, driftwood and on the substrate as a carpet (around the front and sides, there is no BGA on the back substrate). I do about a 10% water change every other day (basically a BGA clean out), but it keeps coming back. For flow i have a 400 GPH canister filter and a 500 GPH powerhead. They are mainly aimed to circulate the surface (no splash, only small ripples). 2' tall, 8' long, 20" deep. I am planning on a 50% water change/BGA clean out and a 3 day blackout. But for the long term improvement: 1) Given i am not injecting CO2, would it be appropriate to add some airstones (or actually an airline w/ small holes running along the substrate) to aerate the bottom; or would it be better to add another powerhead to circulate around the bottom (tank has angels, so they dont really love the current)? 2) increase KNO3? 3) 50% water change every 2 weeks? 4) Any creature to eat this stuff?? Thanks very much in advance! Here's some pics: Attached Thumbnails