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I am setting up a awc with two of the pmup pumps I'm going to relay on Floats in my sump and max run timer as a back up. I would really like to use some optical sensors any idea when they will be out ??Oh, and on very large tanks, like mine, I think that an AWC using the new PMUP would be the best approach. The amount of time it would need to be on would be maybe 8-10 minutes to do 10 gallons each day. Using OSC and time statements, The accuracy might be +/- 3 seconds (max) - which would be less than .05% or about a half of cup of water - hardly anything to get worried about - 3.5 cups a week. Every three months it might show some sort of slight salinity shift (due to correction by ATO) that then could be corrected for. The one thing that would have to be worked out though is how things might be different with a full vs. a nearly empty reservoir. One might have to construct a floating rig for the pump to keep the static pressure equal as the tank drops.
The one on the left is RODI storage. The one on the right is pre-mixed saltwater that is being used for automatic water change.Please explain the two containers in the image below the two DOS units.
@Terence if you were starting from scratch now with a system of about twice the size of your DT would you implement ATO and AWC with DOS or with PMUP devices?... on very large tanks, like mine, I think that an AWC using the new PMUP would be the best approach...
YesHave you found accurate and reliable optical switches that you would be willing to recommend?
Are you coming to MACNA?Is Neptune Systems going to offer such switches?
WOOHOO! 
100K+ views of this thread in just 16 months! We are in the top-10 of all build threads and possibly the fastest to hit 100K!
WOOHOO!
Thanks for tuning in guys, its been fun!
Maybe so, but first and foremost I am a very passionate reefkeeper.Well yea....You're Terence from Neptune! Duh!
Amazing updates! Those pictures are fantastic! The fish are looking quite happy. Have you done any more tweaks / updates to your Apex programming? I don't remember reading about how you implemented the new power features of the new power bar.

I'll forgive you, no problem. But I won't let you off that easy! Go back a few pages, lots of good info and no reason for me to repeat it all again. Besides, I want to up my views count as much as I can - I do have a goalTerence.....forgive me if this was covered but did you decide to go with MH's? if so what bulb are you using?


