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Old 09/06/2017, 08:52 AM   #4
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Join Date: Oct 1999
Location: London, Ontario, Canada
Posts: 3,968
When it comes to flow, more is better as long as it can't blast the seahorses against something to damage them.
At this point, probably use 10X as a minimum figure.
In actual fact, different tanks will need different flow rates and you can't really determine exactly what that rate should be until the tank is all set up.
You want to have enough flow so as to keep particulate matter (detritus and uneaten foods for ex. ) in suspension long enough for the mechanical filtration to remove it from the water column.
Amount of discharge flow, and direction of flow can be determined experimentally once the tank is all set up.
Without a proper set up, you will be relegated to self removal of the matter that can get trapped in and around rockwork and decor, but much of this is unseen unless you blast around things with a turkey baster or small powerhead to see where it can get trapped.
It is best to have hitching in areas of low, medium and high flow so that the seahorses can choose at any given time, which area they would prefer at the moment.
Forgot to mention, that if you are going to drill straight pipe to diffuse flow, be sure to either calculate or experiment with hole size and spacing for the flow going through the pipe. Too many, too large of holes and you will get discharge from some but not all.

Seahorses. Culture nanno, rotifers and brine shrimp.

Current Tank Info: Seahorses
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