Too much return?

[JustinMN18]

I have a COR20 on my 100 gallon DT, 34 gallon sump (it's trigger sapphire 34). Whenever I do any sort of dosing, I generally just say 100 gallons.

I've been having a problem with high nutrients. For example, my phosphates yesterday were 0.34ppb (Hanna ULR). I run GFO mixed with Carbon in a reactor connected to a manifold, but that doesn't seem to really do much. I also have a UV on the manifold, Clarisea roller mat, refugium, and a reef octopus e-essence 130 skimmer. I've been dosing 3ml of phosphat-e each day, and as long as I'm consistent, I can maintain it in the 0.1s.

ANYWAY, I was running my COR20 at 70%, and the manifold puts out roughly 350GPH on the UV, and very low GPH on the carbon/gfo reactor. I was thinking upping the COR % would mean more water through the clarisea, skimmer, and refugium. Is there any downside to more turnover? That's the question haha.

Thanks,
Justin

 

[dstockwell]

Can you increase and not out run the drain.

 

[Existence295]

I have a COR20 on my 100 gallon DT, 34 gallon sump (it's trigger sapphire 34). Whenever I do any sort of dosing, I generally just say 100 gallons.

I've been having a problem with high nutrients. For example, my phosphates yesterday were 0.34ppb (Hanna ULR). I run GFO mixed with Carbon in a reactor connected to a manifold, but that doesn't seem to really do much. I also have a UV on the manifold, Clarisea roller mat, refugium, and a reef octopus e-essence 130 skimmer. I've been dosing 3ml of phosphat-e each day, and as long as I'm consistent, I can maintain it in the 0.1s.

ANYWAY, I was running my COR20 at 70%, and the manifold puts out roughly 350GPH on the UV, and very low GPH on the carbon/gfo reactor. I was thinking upping the COR % would mean more water through the clarisea, skimmer, and refugium. Is there any downside to more turnover? That's the question haha.

Thanks,
Justin

Hey Justin,

you really want to strive for 6-10x turnover in your tank. More is always better as it allows your filtration to catch more debris out of water. Just keep an eye out when running GFO and increasing flow as you don’t want to bottom out your nutrients.

 

[JustinMN18]

Can you increase and not out run the drain.

Yea, I have a gate valve on my main overflow, that doesn't seem to be an issue. I just wasn't sure if there's any problem with adding more turnover.. might seem dumb to question lol

 

[MrGisonni]

Slow down the water through the UV to increase water contact time in front of the bulb, then I would separate the carbon from the GFO. Try just the GFO in the reactor or layer them with sponges at least. The carbon might be grinding your GFO into powder limiting it's effectiveness.