The reason I went with the Mag12 was due to my chiller output plumbing. I ran it up to the main tank with a SCWD thinging inline with two 3/4" outlets. To figure out the total head would be a good math puzzle and I don't have a flow meter. I used my best guess and aimed for the average required flow rate. The SCWD is switching every 7sec approx. if thats an indication of flow rate. I figure the flow is much greater then 135gph with my eyeball meter.

A change in water flow rate through the chiller would cause the chiller to change its on/off cycles right? Lower the flow, shorter the cyle. Brad, how long is your chiller running on for typically?

Not sure, but PCI says it should run 10-15 min, then be off for the same. I think mine is running for 5-10 minutes per cycle, at most. I blew a fuse while away and cooked a couple of colonies. Not sure if they bleached or sloughed yet, but one was my large bubblegum acro. I'll have to pull it and smell for tissue :rolleyes:

Jeez man. That seriously blows - I get really****ed when I lose a frag...

Especially when I lose it to something dumb like a chiller I paid $799 for blowing a fuse.

Well, the info for the unit does specify a minimum flow rate, and I haven't met that. If increasing the flow fixes the problem, I only have myself to blame, not the unit. I also notice that I get a lot of air building up in the lines, so that prolly doesn't help either.

Well, changing the lines to 3/4" has doubled the flow, but that still doesn't meet the minimum requirements. I guess this thing needs a MAG 9.5 minimum, but prolly a 12 for best performance.

Running a T3. Never blew one fuse. Even ran it for a while with the back panel 3" away from the wall.

Reefer_11, any idea what you end flow rate is?

in the neighborhood of 500GPH. max 600. if I am lucky and the stars are aligned right.

I have always meant to time the on-off cycle.. but I start to.. get bored waiting and forget about it.. ;)

we worked yours out to 10 feet, can be 20 feet the shutoff for a mag 7 is at 15 feet

what are you doing with the mag 9?

Steve

Mine is different now with the 3/4" plumbing. I don't have a MAG 9, I need a MAG 9 or better to get over 300gph thru the chiller.