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So my experience: I have 2 #3s in my 75g. I love the flow. I have a maxi-jet 1200 modded and don't like it. It rattles a lot. The koralia is nice and quiet even those I do get the "clicking" noise when I first start it. But I don't really ever shut them off, so no big deal there. They put enough flow out that I have had to be careful how I point them or they move sand!
During my last cleaning regimen (run in a bucket of 1:10 vinegar/ro water solution for 1 hour), I broke the ceramic shaft on one of them. I emailed Frank (see above post for contact info) and explained my situation. He is sending me 2 steel shafts and 2 flow deflectors, no questions asked.
This is a great value for the price and performance of this powerhead. It is no Tunze, but you aren't paying for that either. I am upgrading my tank and will be buying another Koralia for that tank as well.
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Craig & Holly
1-75g FW Planted
1-55g African Cichlid
1-125g w/ 4 turts
1-75g RR Reef
1-12g NC Mantis, 1-12g AP Brittle Star
2-cats
2-dogs (1 Catahoula Leopard Mix & 1 Shepherd Mix)
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