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which oen do you recomend for my tank its 90 gal and can someone explain it to me better where would i put it in the sump under the tank etc thanks guys this wouldnt be a replasment of buying a qt tank instead right deff get one ?
I have no idea about UV. I do know that it is no replacement for a good qt, but rather it is good preventative against anything that might otherwise get into your tank.