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10/28/2017, 05:52 PM | #1 |
Registered Member
Join Date: Mar 2013
Posts: 279
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300 Gallon reef ready with surface oil
My 300 gallon tank has a film on top. I have 4 mp40's and about 13-1500 gph running through the sump. I use felt filter socks.
I'm having one of two problems. Either not enough surface agitation or not enough flow through the sump. Any thoughts? I would think four mp 40's would provide enough surface agitation, they can make waves in the tank. So I was planning to do one of two things, or both. 1) Add additional powerheads - either one or two maxspect gyres near the surface or two Neptune wave's pointed at the surface; or 2) Increase the flow through the sump (currently have a Sicce 1900) with a Vortech L1 or something similar. Again, any thoughts? |
10/28/2017, 06:35 PM | #2 |
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Join Date: May 2010
Location: Long Island, NY
Posts: 2,523
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What type of overflow are you running? With sufficient surface skimming you shouldn't see a film at the top. Increasing surface agitation should help as well.
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10/29/2017, 08:53 AM | #3 |
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Join Date: Mar 2013
Posts: 279
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It's a custom 21" surface skimmer, about 1/3 tank length. I used bean animal style drain pipes with 1" PVC. I estimate (based on how far I closed the center drain) the overflow is at about 60%-70% capacity.
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10/30/2017, 02:55 PM | #4 |
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Join Date: Mar 2013
Posts: 279
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Any thoughts on whether two neptune waves or two maxspect 250 gryes will be enough?
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