Prizm skimmer deluxe, ran OK, I just limited air with a plug from power head air adjustment, brought water up to top “O” ring, not one inch below, the flow is night and day. Did anyone else have to do this?, the water is sparkling and air rated, the results night and day. Yes, it still skims, have air bubbles nothing dramatic, don’t care. Why not skim allot of your water each hour, its just a mini reef (10 gallan 1/2 circle).
“Flow Adjustment”
Initially, adjust the flow with the Flow Regulator so that the water level in the Reaction Chamber Throat is approximately 1" (2.5 cm) below the O-ring, and there are no air bubbles in the water returning to the aquarium.
Due to various aquarium conditions, the above setting may produce a wet instead of dry foam causing "over skimming," and wasting a lot of seawater.
The performance of skimmers are affected by changes in the aquarium water chemistry, which occurs regularly due to feeding, addition of supplements, changes in salinity due to evaporation, changes in the bio-load, and general tank maintenance.
Monitor the performance of the Prizm Pro Deluxe, making small adjustments to the flow as necessary. During approximately the first three days after installation, the Prizm Pro Deluxe may remove a lot of relatively light-colored waste. As the Prizm Pro Deluxe cleans up your tank, less, but more concentrated material will be skimmed off. The daily amount removed will generally stabilize, and the ideal flow setting for your aquarium will be established.