I haven't really looked other than to note that they are quite restrictive - both the nozzle and the elbow behind the partition. Maybe if you get rid of the elbow (just use a curve of silicone tubing) and then test with nozzle off versus nozzle on.
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Simon
Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones!
Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs
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