Ever used this solnoid ....

[TAftonomos]

Here is the linky: http://cgi.ebay.com/Aquarium-Top-off...QQcmdZViewItem


I'm doing a 24" cube tank. My RO unit is mounted in the basement, and I really don't feed like hauling 5 gallon pails up and down the stairs twice a week (or more). My plan was to have a small resivior in the cabinet, which will feed the DIY kalk reactor (HD canister/filter one) and then drip into the sump.

What I'm trying to do is avoid the possibility of a flood.

I used to dose kalk through a Kent float valve, but after about 4 months, it became stuck due to kalk residue.....causing a flood.

My first plan was to have the RO unit push the water up to the kalk reactor, and then just use a solnoid to dose when the float switch said so.....only now I understand that leaving the water sitting in the RO/DI creates TDS creep.

What do you think the best plan of action is? A solnoid on the top-off resivior and a solnoid after?

[Geoff]

that is pretty much what i do. i have used a RainBird sprinkler valve for my auto-top off control. it pretty much looks exactly like the pic on the ebay site, but instaed of being small it is for 3/4" pipe fittings. i used to have a nice special solenoid, but it burned out. it overheated because i forgot to turn it off when i was doing a water change. that solenoid was only $20. i do not have the link with me at work, sorry.

G~