How do I remove BGA if I have DSM tank - The Planted Tank Forum

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post #1 of 19 (permalink) Old 11-02-2012, 06:17 AM Thread Starter
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How do I remove BGA if I have DSM tank

I've had my DSM for a few months now, slow growth and lots of hc melting. Until recently BGA has became very visible in my tank. I've heard about EM dosage in flooded tanks, but don't know how to apply the treatment to a dry start. As of right now my plants are not ready to be flooded, and will have no co2 system for a few more months.

My current tank specs/routines:
-Mr. Aqua 17.4 G Frameless Tank 24 x 12 x 14.4 Inch (suspended 16inches from substrate)
-Amazon II Aquasoil,
-24 Inch Planted Aquarium Light 2x24 Watt T5 High Lumen
-Syran Wrap Covered almost all times
-12-14 Hours of Light exposure
-Prior to a month ago, tank had a bit too much water. Only spray occasionally to keep substrate moist now.
-Tank temperature is about 70-80 degrees Fahrenheit
-Humidity about 80-90%
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post #2 of 19 (permalink) Old 11-02-2012, 02:01 PM
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well u can spray it with hydrogen peroxide. keep it off the plants as they wont like it too much
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post #3 of 19 (permalink) Old 11-02-2012, 04:50 PM Thread Starter
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Is that safe for aquasoil?
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post #4 of 19 (permalink) Old 11-02-2012, 09:01 PM
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well i've used it before in my tank full of water and sometimes it gets on the aquasoil. doesn't seem to hurt it
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post #5 of 19 (permalink) Old 11-04-2012, 08:26 AM
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70 to 80 degrees ?
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post #6 of 19 (permalink) Old 11-05-2012, 04:24 AM
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I believe you can kill the BGA by lightly sprinkling KNO3 on it too. This may be a problem for the plants if the crystals remain on the leaves.

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post #7 of 19 (permalink) Old 11-06-2012, 11:02 AM
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Anyone ever tried mixing up a fairly concentrated solution of erythro and using that in a spray bottle during a dry start?

I've not tried this but I don't see why it wouldn't work. Erythro is used topically in medicine all the time and the concentration you can deliver is actually higher when you dose topically. Even in super high concentrations it shouldn't have any negative effect on plants. Might be a fun experiment and definitely less risk (almost none I would guess) to your your plants then using h202 or kno3 during a dry start, which granted are both pretty low risk too if you are careful.

Long story short, I'm curious to see if this would work and want you to try.

Wouldn't mind hearing Hoppy's, Blazingwolf's, or others thought on this.
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post #8 of 19 (permalink) Old 11-06-2012, 12:02 PM
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I believe you can kill the BGA by lightly sprinkling KNO3 on it too. This may be a problem for the plants if the crystals remain on the leaves.
This will kill it. But like hoppy said the crystals left on the leaves could be a problem.

I would try making a midly concentrated kno3 solution and spot treating with a syringe

I can't say I've tried this but have killed bga on exposed(above the water driftwood by sprinkling kno3.

I know keeping the nitrates from getting to low in my tanks have kept the bga from returning.

It seems like it would work, let me know if you try it,


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post #9 of 19 (permalink) Old 11-06-2012, 11:14 PM Thread Starter
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Yes the tank averages about 70-80 degrees, in temperature.

Thanks for the advice. I already am treating the tank with E.M. Filled the tank up with just enough water to cover the plants and then dosed the recommended amount. 48 hours after the first dosage, I drained the water and filled it back up and did a second dose. So far the algae doesn't seem to be dying off. It's still pretty stuck onto the aquasoil. So I will now try this kNO3, btw where can I get it?
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post #10 of 19 (permalink) Old 11-06-2012, 11:32 PM
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Anyone tried scrubbing for Phosphates (I am currently testing this on my 90 gallon) or an algae scrubber?
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post #11 of 19 (permalink) Old 11-06-2012, 11:44 PM
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Try a black out


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post #12 of 19 (permalink) Old 11-06-2012, 11:49 PM
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Stump killer is usually pure KNO3, and many hardware stores have it. Just check the ingredients before you buy it.

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post #13 of 19 (permalink) Old 11-07-2012, 06:45 AM Thread Starter
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Try a black out


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This would be 4th day without giving my tank any lighting. Besides regular room light which is very dim. How long do you think I can do a black out before my plants dye due to photo starvation
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post #14 of 19 (permalink) Old 11-07-2012, 08:26 AM
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I know this is different. In my tank (with water) I had horrible bga I started a blackout(covered with cardboard) 2 days before I started maracyn. I opened the lid to feed the fish and run test everyday. 7 days later I was done with maracyn, removed the cardboard and did a 75% wc I lost no fish or plants and the bga was completely gone. This was 3 months ago. I now pay close attention to my nitrate levels and everything is good.


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post #15 of 19 (permalink) Old 11-07-2012, 10:54 AM
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Ive always noticed the BGA notably dying after 2-3 days of treatment with erythromycin. The "mats" of "algae" seemed like they would lose a lot of their "grip" and I could more easily remove them.

I never really noticed a difference after one day, but I bet you would if you had access to a microscope with a 100x oil immersion lens.
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