Ozone and Macroalgae: compatible?

[metalruebe]

Hi, is there anyone with experience in compatibility of macroalgae (Chaeto) and Ozone dosing?

I'm dosing about 10mg/h in my 90 gallon, i try to hold my ORP steadily at +350mV. That way i beat my GHA rather quickly, to my surprise.

I run an algae reactor with Chaeto and i'm not sure if it kills it off currently or just stunts the growth. Anyone running low dose Ozone successfully with a Refugium?

 

[Randy Holmes-Farley Verified Community Expert]

In general, ozone does not typically reduce hair algae, although that is occasionally mentioned.

I've used it with macroalgae just fine.

Ozone alters the form of some trace elements in the aquarium, and might impact organisms in some aquaria for that reason

 

[metalruebe]

Thanks Randy! I have to say i aggressively lowered my phosphates in addition to ozone (about 0.01 atm), but i attribute the speed of the die off to the ozone.

 

[lone reefer]

In general, ozone does not typically reduce hair algae, although that is occasionally mentioned.

I've used it with macroalgae just fine.

Ozone alters the form of some trace elements in the aquarium, and might impact organisms in some aquaria for that reason

Is there an optimal place in the sump to dose ozone? Either before or after refugium? I have a small pump with a Venturi attached to an inexpensive ozone generator. If I put the pump before my refugium I’m concerned it might harm my macro algae or pod population. But if I install after the fuge I get a lot of bubbles from the display. How important is the placement?