Tunze Aquawind

Yes, that is true, I am not sure where they found them for $20 as the local Fry's store sells the fan for $40, to that we add a multivoltage with all the plug adapters USB power supply which is about $20 and a clamp for mounting. We have never made it a secret, it is just a computer fan we modify but that is all any aquarium fan is with a few exceptions being small greenhouse or coldframe fans from horticulture. Nobody actually makes an aquarium fan from scratch.
 
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