Hydor Koralia

Brooke24 · Nov 21, 2020

I have a 1500 GPH Hydor Koralia circulation pump, and I’m wondering if there is any way to decrease the speed? I want sps and lps, so I don’t want two full 1500. I’m buying another one depending on if I can turn this ones flow rate down. Does anyone know?

ThePurple12 · Nov 22, 2020

No, they're not made that way. You can buy a controller for them, but it doesn't control flow.

vetteguy53081 · Nov 22, 2020

They are not DC controlled and therefore run at constant speed. You may be able to reduce flow slightly with foam around the outside intake (guard) but will not be og any significance

Brooke24 · Nov 22, 2020

vetteguy53081 said:
They are not DC controlled and therefore run at constant speed. You may be able to reduce flow slightly with foam around the outside intake (guard) but will not be og any significance

Gotcha. What if I grabbed another one, I want lps and eventually sps. What flow should I get?

ThePurple12 · Nov 22, 2020

Depends, how big is your tank? The general rule is around 30x turnover

Brooke24 · Nov 22, 2020

ThePurple12 said:
Depends, how big is your tank? The general rule is around 30x turnover

90 gallons. So that means probably another 1500? I don’t want too much flow, obviously since the lps don’t always like that. I mean it’s all about placement of the coral though? 90x30= 2700, so either a 1500 or a 1150 gph?