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What in your experience has been the best way to beat cyano bacteria in your tank?
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For me it has been a 3 step solution. 1st manual removal. Test your nitrates and phosphates, the only way to get an accurate phosphate reading is by using the Hanna ULR test. You will in many cases find your nitrate level to be too low in comparison to your phosphates. As an example of those keeping an ULN system, if your nitrtaes are 10, your phosphates would have to close to undetectable for it not to cause a problem. So usually ths next step is to lower your phosphates, sometimes initially by using Brightwell phosphate-e or similar, then by using gfo or your choice to maintain. Find out your source of phosphates, many reef additives like reef energy are a big culprit, react accordingly. Finally turn down or even off your red spectrum of lights, the cotals do not need them and have been known to feed cyano. Tbis has 100% worked for me.
Chemiclean will get rid of it, temporarily, but will not beat it, it will come back. It does work but can be dangerous, it greatly effects O2 and can cause undue stress, i have many times seen it spur fish disease like ick because of stress due to lower O2.


Might want to mention that this process is done for nano and pico tanks if I remember from your other posts, right? This process isn't feasible for some people, especially with larger tanks which may require a solution that allows for leaving rock and sand inside the aquarium.many of my friends like to:
take apart the whole tank, access the sandbed outside the aquarium, rinse it out with tap water until its clear (an hour or better work, price of storing waste) then with saltwater.
they then swish the rocks around in buckets of saltwater to eject the waste from the rocks they've stored or they jet it out of the rock with saltwater using creative means, either way they rid their tank of cyano food as steps one through nine
step ten is reassembling a cyano free tank placing cloudless rocks and sand back together, both retained their bacteria, and then posting us a pic.
I have more than seven friends who do this not a joke![]()
No, don't blame chemi-clean. Blame yourself for not taking care of the root cause of the issue and letting it get out of control after the cyano was gone.Using ChemiClean is the single worst thing I have done. It did not kill the corals or fish. I did eliminate the cyano.
Soon after the cyano disappeared turf algae started up and took over. Nothing eats it; at least trochus snails and pincushion urchins do not. None of the tangs touch it either. Countless hours spent pulling it off the rocks; pulling all the rocks out and scrubbing them clean. Covers them back up in a few days.
Cyano was not really that big of a deal compared to the disaster treating it created.

