Auto topoff

[zep]

Can anyone recommend a good auto topoff system for a 90gl reef tank

[Crown Royal]

Tunze's Osmolator system is pricey but appears to work very well. I've seen one in action - it uses an electronic "eye" to monitor water level. The pump is kinda cheap but easy to replace.

http://www.jlaquatics.com/phpstore/store_pages/details/supplies.php?product_ID=tz-osmolator

There's a whole bunch of DIY ones out there:

http://ozreef.org/component/option,com_bookmarks/Itemid,50/mode,0/catid,18/navstart,0/search,*/

Most revolve around a float switch in the tank connected to the power supply of a pump in a resevoir.

The simplest system (although maybe not feasible for a 90g system) is an I.V. style gravity drip.

[macphoto]

I ordered mine from here...

http://www.autotopoff.com/

I like that it has 2 float switches (in case the primary one sticks in the on position).

--Mike

[mogurnda]

I used a large reservoir and a cheap Kent float switch. The details are here: http://www.aquariacentral.com/forums/showthread.php?t=55479&page=2