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51 Posts
I have the Rio 600 RVT and I recently saw the needle wheel impeller but it's for the Rio 800/RVT. I want to know if I can use the 800 needle impeller for the 600 even though the two powerheads have the same dimensions but different gph and watts rating. I know I could mod the 600 impeller by splitting the blades to increase the number of blades on the impeller.