CPR skimmers

I have a CPR CS 90. Rated for 600 gph with bulkhead. I don't have the sponge, or tube to quiet it. I put a 90 on it and that stops the sucking sound. It does have a crack in the back but its been sealed and does hold water. Its was on my tank for about 8 months. I asking $35.
I also have a CPR CS 100. Rated for 800 gph with bulkhead and the same set up with 90. Asking $55.
I have four aqualift pumps, one still new in the box and the others have been rotated about every three months. I'm asking $5 a piece for those.
 
Thats about as clean as I can get it. I let it soak with vinegar and water for about three days. They both work great and the crack in the 90 has been sealed and holds water, no leaks.
 
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