Disregard the threaded pipe cap and the rounded cap. those were from the original design.
8" of 4" diameter PVC pipe
1 - 4" diameter plug
1 - 4" diameter rubber end cap with hose clamp
2 - female garden hose repair ends
2 - 1/2" threaded valves
4 - 3/4" to 1/2" threaded plastic hose conections
1 - male garden hose threaded (2 pictured for old design)
3 - pvc grates about 1 1/2" tall
1 - 3/4' 90 degree corner tube(has hose ends)
some small hose clamps
20' - 3/4" tubing
5' - 1" tubing
3 small zip-ties
and of course a pump. mine was a 700gph in line pump
poly sponge(got one for car washing)
knee high stockings( cheap ones in those little plastic balls)
small drill bit
7/8" spade bit
flat head screw driver
channel lock pliers
needle nose pliers
I may have forgoten a few things and you may need to swap a few parts to fit your needs exactly. I hope I explain it well enough to be understood. Any comments feel free to post. also please rate!
make the pump PULL water in the top and out the bottom. do not plumb it to push water through. it builds to much pressure and WILL blow the plug out of the top. I found that out the hard way. thank God for those valves installed or it would have syphoned my whole tank onto the floor. instead i caught it quickly and only about a gallon spilled.
Step 1: Drilling Holes
you may need to smooth it out or slightly enlarge your hole with a bit like the one shown. I didnt make the hole too large. i wanted a good seal. I wrapped teflon tape around the adapter a few times then threaded it into the pipe with the cresent wrench. take your silicon and run a bead around the adapter on both the inside and the outside. i dont suggest smoothing with your finger like i attempted. its difficult to clean off your hands. let this silicon cure for the recomended 48 hours before filling the filter with water for best seal.
the filter baskets will sit just on top of the outlet tube. to keep them laying even i glued a small piece of PVC pipe opposite the outlet tube at the same height.
Step 2: Filter Baskets
Step 3: Valves and Hose Connections
also put in hoses to and from the tank. one valve should be on each the inlet and outlet hoses. my hose from the tank happened to be 1" diameter but you'll need to get one to fit your pump.
the hose to the tank was 3/4" just to make things the same.
Step 4: Filter Media
the second basket contains the activated carbon. i bought some knee high panty hose from a certain super center and poured a decent amout into it. it isnt stuffed by anymeans. it maybe has a cup worth of carbon in it. loosly tie the end in a knot so you can possibly reuse it. lay it in the basket around the zip tie and rearrange the carbon so it fits nicely.
the third basket would contain the bio-balls. i didnt have any as they were in delivery but the instructions are simple. put them in the basket.
Step 5: Put It All Together
put the rubber plug on the bottom of the pipe. tighten the hose clamp. attatch the tube to the outlet valve. drop in your filter baskets remember bio balls first, then carbon sock, then sponge. push the plug into the top. tighten its screw. screw on the inlet tube. and begin the water flow. hopefully you did everything correctly and it doesnt leak. my first design leaked around the threaded cap thats why i scrapped it.
once its running it should work like a dream. I hope this was explained clearly and detailed. it was my first instructable after all.
thanks for reading!