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IMO the airstone (placed under the heater element) keeps the larvae from gathering in the heated water area, disperses them before they suffocate.
Might have been too quick of a temp swing...some folks actually lower the temp in the larvae tank to slow down metabolism and allow the larvae more time to learn to hunt before the reserves run out.
And yes (IMO) you can have too much air, they are learning to hunt moving objects, turbulence just makes that harder...keep us posted ont he next hatch. I had some Maroons hatch last night as well. so far so good...so time will tell.
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