Powerhead Aeration

[RothChyld]

I have a couple powerheads and wanted to know if its good or bad to turn on aeration. If so how much do I set the flow?

Thank you in advance!

Setup
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90g Reef Tank (3 years of age)

Fish: 8 Chromis Damsels, Yellow Tang, Red Hawkfish, Lawnmower Blenny, 3 Bar Gobies, Sandsifting Goby, Royal Gramma, Maroon Clown, peppermint shrimp, featherduster, several turbos and hermies.

Inverts etc: Bubble, Hammer, 3 Gorgonias (brown, red, yellow), 2 finger leathers, 1 elephant leather, 30 or so mushrooms, brown polyp colony, brown/green polyp colony, torch, plate coral (looks like a plate and its hard - no tentacles or anything)

Water:
Everything is in range. Sometimes I have nitrate spikes but not enough to damage anything. Also that means that instead of no reading its miniscule. Temp stays around 80. I can break down if needed.

Infrastructure: wet/dry with liverock inside for the trickle, carbon underneath, and protein skimmer. I have about 3" of substrate floor.

[OrionGirl]

Aeration generally is a good thing, but not inyour main tank. Many corals, and all sponges, can easily be killed if bubbles are trapped within them (this is why a sponge should never be removed from the water). If you have concerns about low oxygen levels, a skimmer will easily do a better job than the powerhead, in addition to pulling out dissolved wastes.