Is this one of the same Russian trolls that screwed with the election? Lol. Get out of here with this garbage.
Gyre to save money, Vortechs for the best. It's as simple as that.
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So if something isn't widely reported it makes it false? Your closed mindedness is what's garbage.
Here's some advice, start doing some research on the things you dismiss. Not a basic google search either. I've spoke with people who run coral farms, know people first hand that have had major tank issues due to vortech pumps. If you choose not to believe it that's fine, doesn't change anything for me. I have nothing to prove here, just offering the simple advice of checking the shafts to prevent issues.