Aquatic Plant Forum banner
1 - 3 of 3 Posts

· Registered
Joined
·
164 Posts
Discussion Starter · #1 ·
Hey folks,

I really need some advice on dealing with BGA. I've been battling this in all my tanks for 3+ years now... It comes and goes with little rhyme or reason, And now my freshly setup iron aquascape contest tank is a slime coated mess (barely 24hours after its initial setup).

10g setup is:
10g tank, 30w NO flourescent, Whisper Jr, Pond pump (60gph) feeding a DIY reactor Fed by DIY CO2 system.
Substrate is onyx sand
Plant load to start was about 20 stems of Ambulia (temporary resident), Hydrocotyle verticillata (waiting on rotala indica to arrive)
KH is 14, pH is 7.0 (42ppm CO2) Ferts, NO3 - 8ppm, PO4 1ppm, dosed 3ml Plantex (a guess of a starting point).

No fish yet, 12 hour light cycle...

What is going on here? There has to be a cause, Only consistant cause I've seen is that these outbreaks happen when my WTP pulls from a specific well, which results in high silicate levels in the water.

I know I can deal with the mess, using erythromyacin, blackouts, and H2O2... But why do these outbreaks keep hapening?

Idears?

Andy
 

· Registered
Joined
·
164 Posts
Discussion Starter · #4 ·
It's a BLUE GREEN algae problem, not black brush algae. (I wish, BBA is relatively easy to deal with).

Tanks not even 24 hours old, nutrients are still where they should be (With the exception maybe of traces). I'm going to bump up the NO3 a bit higher (10ppm), CO2 levels are deadly to fish at the moment. I haven't mixed a DIY CO2 for a 10g in a while, wasn't thinking when I added the yeast...

(BTW, guppies do great work on BBA - just don't feed them, when they get hungry enough they'll start munching on it).

What drove me insane most with this tank, is the speed in which the BGA outbreak happened, less than 24 hours and the tank was coated. I've never seen it progress that fast before. But now I'm looking for a final solution - this is getting insane, 6 tanks running in the house right now and each one has a BGA outbreak (Some less than others).

Andy
 

· Registered
Joined
·
164 Posts
Discussion Starter · #6 ·
Tom: what else could cause BGA outbreaks? I'm not blaming the problem on the 10g, just frustrated by the rate it seems to take over on occasion.

I decided to setup an experiment, and try to find the source of the problem... Setup another identical 10g tank, mixed the substrates, then divided, same quantity/quality of plants, same setup (removed driftwood from the iron aquascaper tank just to make things fair) same lighting, same filters (new media in each). Then I did a single 1day 200mg treatment of erythromyacin to each so neither tank should have an existing BGA problem. Dosing the same amounts of ferts (10ppm of NO3, 1ppm PO4 + traces), DIY CO2 to each, CO2 is still rather high in both, trying to get the plants kickstarted to a certain degree (42ppm - pH is 7.0 in 14dkh)

I'm running one tank on city water, one on reconstituted RO/DI (bringing it up to the same kh/gh as the city water - as it comes out of the tap).

3 days later, the 10g on city water definintely is developing a BGA problem. The reconstituted RO tank, is clean. To be clear, the original 10g I was asking about, is now the RO/DI tank.

I'm befuddled - Somethings causing these algae outbreaks... But it doesn't seem to be the usual suspects.

I did mention I do have BGA in all my tanks - to varying degrees, in some tanks it's just a little green tint on the substrate, maybe a bit of black in the corners under the substrate line... Other tanks like the 55g seem to be fine one week, slimed the next.

Andy
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top