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Having run twin 250w mh over my 5ft marine tank, before I moved to planted I know all about evaporation.
Easiest things are:
Auto top up - various makes available. Tunze aquamedic etc. just fill reservoir and it's ok for a week or so.
Cover glasses; reduce evap by lots
Dehumidifier: ebac...
The initial surge from a mh blows the contacts on a mechanical timer. This means it can stick on or off.
It will also wreck a digital timer .
You need a contactor which is designed for it. I had the same issue when I ran twin 250w over my marine tank...
Hi,
I have one of these and it runs as many heaters as you want.
http://www.ultimatereef.net/forums/showthread.php?t=241344
Is a good thread to show how to install. If its the same atc 800 I have
Cheers
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