Quote:
Originally Posted by travisc
I texted Matt at concept to see if the sump is large enough to hold a second skimmer. Physically there is room in the compartment for another ATI 250. Cost wise it would be another $800 ish to purchase another one. Then there would be no haste of returning or trying to sell equipment. The 2 skimmers then should be more then enough? Then really the only concern would be keeping a good eye on the socks ?
I really appreciate everyone's help, advice and praise on the tank. It may be a bit discouraging now but benificial in the long run. I may need a week on the beach to distress before I finish the set up though! Lol
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Travis, the concern with the sump size is when there is a power out or the return and skimmer is shut off there will be back flow into the sump. The operating water level of the tank will be higher than the non-operating water level of the tank. All that volume, plus the volume in the pipes will back flow into the sump. Your sump size compared to the size of the display tank is very small, so there is a concern that you do not have enough empty volume in the sump to hold the back flow without the sump overflowing. Some people use check valves to prevent back flow, but they need to be cleaned regularly or they will leak, so a long power outage would mean a wet floor. The best option is to have a sump large enough to hold the full volume of back flow.
As far as the 2nd skimmer goes, you would want to run the skimmers in parallel rather than putting them both in the same chamber. If you put them both in that same chamber then they will be re-skimming water that the other has already skimmed and will thus be less efficient. The footprint of the skimmer is just over 16 x 10"? So if the sump is say 22" wide then you could put the skimmers beside eachother with a divider running between them and the water would flow through each section separately and prevent them re-skimming.
If you can forgive my prehistoric 2 min drawing...this is what I mean (use your imagination for the baffles between the skimmers and the return pump haha).
