born2lovefish said:
anyone have any info on making a wet/dry for a 75 gallon?
Here ya go!! The easiest and least expensive wet/dry you'll ever see! Made up on the spot by, me!
You will need:
1x 5 gallon bucket
5x XL Bags of Green Army Men
1x 300-500gph Powerhead
1x Square Foot of Filter Floss
some PVC pieces(1"), silicone, and a good ceiling hook.
Drill a hole in the 5g Bucket and create a PVC attached overflow.
Put all of the Green Army men in the 5g bucket. Place the Filter floss on top of the Green Army men.
Hang the Bucket from the ceiling with string and hook, and attach more PVC to allow the overflow to drain into the tank.
Have your powerhead pump water through PVC up above the bucket, and trickle over the filter floss, army men, and back into the tank.
...

This is cheap, and effective.. Also looks great next to a bug zapper.
You might also find some DIY plans on the Internet, and even use this concept to make your own great idea!