What is this ?
- Thread starter Kamdavid
- Start date
Cyanobacteria 
I dealt with it once, i just tore the tank down and redid it and corrected my causes.
Find the cause, there are many potentials. Go from there.
My issue was a combination of too much light, too little nitrates, and no surface agitation to create flow
There are other causes too.
I dealt with it once, i just tore the tank down and redid it and corrected my causes.
Find the cause, there are many potentials. Go from there.
My issue was a combination of too much light, too little nitrates, and no surface agitation to create flow
There are other causes too.
We have no problem with surface agitation. Could be light. I have a 24/7 light fixture. What do I do ? Empty the tank? I’ve been wanting to anyways to change the substrate. But I hadn’t seen it since I got rid of the hornwort two weeks ago. Now it’s on my driftwood !
Retired Viking
Fish Connoisseur
Generally it is a mixture of too intense or too much light and too many nutrients. Try reducing how much time you have your tank lights on. Do you add fertilizer? you can try reducing that also if you do.
I don’t add fertilizer , I just started (2 days ago) using NilocG Thrive caps . The tank light runs by itself but I could turn it on and off by myself. So should I drain the tank ? And how quick should I take that driftwood out and clean the problem ?
Retired Viking
Fish Connoisseur
I personally would try to reduce the light, you can try cleaning the wood but if the conditions are still there in time it will come back again. How big of a tank is it and how many fish?
Retired Viking
Fish Connoisseur
I would not tear down the tank yet, do a large water change and wipe down what algae you can. I would look at picking up some fast growing plants to help reduce the nutrients. When you say the lights are on 24/7 does that mean no dark time? What type of fish?
It grows from excess nutrients, low oxygen levels and poor water movement.
Try doing a 75% water change and gravel clean the tank every day for 2 weeks. Suck out as much of the cyanobacteria as you can each time you do the water change.
Make sure any new water is free of chlorine/ chloramine before it's added to the tank.
If you have fluorescent light globes that are more than 12 months old, replace them and the fluoro starters. Use globes with a 6500K (K is for Kelvin) rating.
Try doing a 75% water change and gravel clean the tank every day for 2 weeks. Suck out as much of the cyanobacteria as you can each time you do the water change.
Make sure any new water is free of chlorine/ chloramine before it's added to the tank.
If you have fluorescent light globes that are more than 12 months old, replace them and the fluoro starters. Use globes with a 6500K (K is for Kelvin) rating.
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