One method of top off control that I have used in alot of tite apps is an electronic tank level sensor. It works by three tiny probes positioned at the level you want the tank to fill to. Once the water reaches the probes the conductivity in the water engages the auto off mech in the larger part...
Sorry to take up so much room here but here is a list of rejection rates achieved through a standard ro membrane.Hope this helps a little
Bryan
Aluminum 97-98%
Calcium 96-98%
Ferrocyanide 98-99%
Nitrate 93-96%
Selenium 97%
Ammonium 85-95%
Chloride 94-95%
Flouride 94-96%...
I completely understand. To be quite honest with you the only reason I couldnt use my old screen name is because it was ARS Aquatic reef systems and I sold the company a few years back.
Its cool that you keep a look out man!
Hope to talk to you again soon!
Bryan Crenshaw
Im sure you get alot of that on these boards and I understand where you would be standoffish (no pun intended) :) at such an advance.my wording may have been a little off. I do use this system and many people on this board use systems of my design. It is good that folks like yourself keep an eye...
Thats so nice of you I supose you think Im a fly by.
I think its a great price and I know its a good product.
By the way Im sorry for the fact that I advertised a product on the site. But I actually just recently got back in the biz and Im selling them at next to no profit at the moment so I...
I agree that some type of filtration is highly necessary to ensure a clean slatewhen doing top off or mixing, though I also have to say that a DI is a fairly necessary addition to the filtration process because you dont know what exactly that left over 10ppm consists of and typicaly the things...
Hey. Here is a link on ebay to a pretty good deal on a RO DI system and it comes witha free TDS meter.
It ends in 8 hours
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... %3AIT&rd=1