How often to replace GFO?

[Randy Holmes-Farley]

Thank you Randy!

I just ordered 2 tests from them. I'd never have made the Oceamo/Moonshiners connection without you!

Bob

lol

Not me, but it was a good answer. lol

 

[Saltyanimals]

The higher phosphate is, and the faster water is passed through the GFO, the faster it depletes.

It could be depleted, but you can verify by measuring phosphate in the effluent from it to see if it is lower than the tank or not.

What corals are struggling?

Interesting call out with the flow and GFO depletion. Logically it makes sense since you're cycling more water through it, but I'm curious as to flow. For example, many folks recommend the Sicce 1.5 which is 357 GHP. I use the tried and true MJ1200 that I have laying around which is slightly less at 290 GHP. However I noticed my reactor doesn't last as long. Yes it depends on how much PO4 is in the water and used, up, but your comments suggest maybe I need to up my GPH through it to milk every last bit out of the PO4 blasting power to prolong GFO refill time. This may also help power through clogging issues with a GFO/GAC mix.