I saw your post I hope this helps
The cost (all aprox)
Liter Meter III 300.00
Plastic Tube 40.00
Power head 20.00
Kalk 10.00
Homedepot trips 40.00 (drill bits, connectors, new hack saw blade, teflon tape, PVC cement, PVC, hose clamp, PVC end cap)
RO storage tank 20.00
as you can see this 60-80 dollar project turned into quite a lot, but is well worth it for me. No more dosing, no more adding RO water, and soon auto water change this is why I went with Liter meter. Just waiting on spare funds. In process of building new canopy with dual 400w MH. Below you will see pretty much all links used to make this. Would I recommend this= YES
This was the link http://www.mv.com/users/besposito/reef.html I started with and used his final entry of his data log to start mine. I also came across another design http://www.geocities.com/Heartland/...ank/nilsen.html which I took the top of for mine. I got my plastic from this link http://www.regal-plastics.com/regal.../round_tube.htm and the most expensive purchase was from here for my Liter meter III http://www.premiumaquatics.com/Merc...ory_Code=Dosers
I hope this helps