algae is destroying my tank.

  • We are currently upgrading MFK. thanks! -neo
I'd turn off the powerheads, break out the toothbrush, and scrub it clean. Then follow up with a 20-50% water change. Target the stuff you just scrubbed out with the syphon. High water flow (10-20 times the tank volume per hour) will also help with this problem.
Normally I'd recommend adding a natural clean up crew, but with the inhabitants you have they would likely just turn into an expensive meal. A powder brown tang, rabbit fish or any other surgeonfish with a similar body plan will usually help keep it in check, but typically won't mess with the long stuff. They like the lawn mowed first so to speak. Also make sure you have good air contact particularly on the water surface. If there's surface scum, that won't cut it.

Good Luck!
 
im gonna have to agree with delgado and guppy and say the refugium. if you dont go mud based use lots of live sand and rock and then fill it with caulerpa and keep the light on it 24/7 . what kind of filter are you using now? lighting/tank size?
 
Oops! I somehow missed that it was cyano. But everything still applies except the surgeonfish. I don't know of a fish that eats cyano.

I run a reef so I'm a little paranoid about adding chemicals. I once use Chemi-clean with good results. However, it will blow up your skimmer.
I prefer water changes and increased flow. Water changes will resolve almost any chemistry issue you have and it's the cheapest way to go.
 
Last post... Sorry. I can't edit to add.

FWIW, If you decide on the Refugium route, you might try chaetomorpha (spelling?) instead of caulerpa. It doesn't go sexual and it's less likely to take root in you main display. So, you don't have to run the lights 24-7.
 
PHOS BUSTERS and CALCIUM recommended in aquarium magazine this will promote coriline algea and the phos busters will destory green algae.
 
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