Algae from fuge light under tank

[grozier]

Could the refugium light be causing algae to grow under the sand in the DP? I have growth on my sand on the side of the tank where the fug light is at.

 

[alan.reef]

what # is yuor PO4 & Nitrate?
vaccum sand 20% when wc and cut back food.

I have GHA on my DT rock. is a pain..

 

[grozier]

I feed only every other day. Nitrates are around maybe 2.5ppm hard to tell with the color charts. I've been sucking out the sand when doing wc but the algae is on the bottom of the tank.

 

[alan.reef]

test all your water param.
what kind of filteration you have. Adding GFO or ATS will reduce PO4.
if it old sand, it could absorb max of PO4.
You need to find out, where is that Nitrate and PO4 comes from.

 

[grozier]

Just bought gfo carbon dual reactor for Xmas though. Just made a algae scrubber and its only been going about 3 days.

 

[grozier]

I was using my cheato light on my scrubber but it is a 64k light. Think its to strong. As far as where its going from, I'm wondering if its growing from under the sand bed due to the light under the tank

 

[alan.reef]

Just bought gfo carbon dual reactor for Xmas though. Just made a algae scrubber and its only been going about 3 days.

Dont you mind to share your DIY ATS?

 

[grozier]

its kind of primitive right now just used some left over parts from a canister filter.

 

[grozier]

Need to get a lower k bulb

 

[flyingfish]

Can you try covering the underside of the tank with something to see if it stops the algae growth?

 

[Squishie89]

Can you try covering the underside of the tank with something to see if it stops the algae growth?

I was going to suggest the same thing.

 

[grozier]

Could that cause algae growth from under the tank? You would think others would have the same problem? I think I'm going to cover it for a while and see what happens.