How to control green algae with high magnesium in reef tank

Question

Ive got this green algae that I cant seem to get under control. Parameters are normal except high Magnesium. Doing weekly 20% water changes to lower it but the algae still kicks in hard. Any suggestions?

Cody · Answer

3% hydrogen peroxide. 0.5-1 ml per 10 gallons of water volume once daily.

Devin · Answer

If they're healthy they should be able to handle it. It will stress them out a bit but if you don't get that algae under control it will drown everything out. I had an issue with it recently and it grew over everything

Devin · Answer

If your water parameters are good, try blacking out the tank for a few days

RunswithTrtles · Answer

When I had it, it was from excess nitrate and normal phos. Parameters look normal because the algae is soaking up the excess, so it's not in the water column.

Feeding less if you can, and Macroalgae in the sump is the best remedy in my opinion.

CDunn352 · Answer

Thanks!

CDunn352 · Answer

How will that affect anemones?

Ian · Answer

🤔🤔🤔

How to control green algae with high magnesium in reef tank

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How to control green algae with high magnesium in reef tank

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