Once again all very good points and all of help. Seems I have pretty much got everything you guys are listing except the auto water changer.
Let me throw m list up, see if there is anything else you guys think I should add or ungraded. I am going to give brands just cause skmetims a brand makes a huge difference.
Warner marine 180 skimmer, full apex, 1 brs gfo reactor, 1 two little fishies reactor the 150, dual Thompson MH hanging light now powered by Lumatek ballast up to 400 watt, dual corallife t5 for actinic. I also have a cheap UV, but I am thinking a better one needs to be plumbed in if I go with one. What I am missing is the return pump/s.
My standard fall back return is a Rio2500 . The aren't expensive and I can get them locally about three different places. But they aren't the most efficient. Being in the living room though whatever I get has to be quiet.
For a water change I don't know if I can automate it here. I am close on the 125 as it is right next to the bath. I drain 20 out of the sump, fill 20 out of my mixing tub. Ten minutes and I don't carry a bucket. RO/DI is 75 gpd and so far kept up with me.
Auto water changers are a personal choice.
I use a couple of different 55 gallon barrels and 44 gallon Brute Trash cans I bought specifically for this purpose. The Brute's hold RO water. The drums hold mixed salt water.
My set up in my basement on the unfinished side, so water spills are a non issue.
I bought a python water changer a LOOOOOOONG time ago and use it to siphon water from the sump to the laundry room sink. If you decide to go with this as an option, price the python and then look for water bed filler hoses.....same thing, just different color fittings. The water bed version is usually less expensive IME.
I use a hand siphon to pull detritus out of my display and fill up about a 5 gallon bucket. It gets dumped in the sink.
For refills, I just use a separate submersible pump (Quiet One...model something or other I don't remember now) with a hose connected to it and pump water from the barrels to the sump. Low tech and requires some personal attention but its easy and inexpensive.
For RO top off, I use a liter meter 3.
Return pumps.....
I don't like the RIO's based solely on what I've read about them. Too many stories about failures causing serious issues.
I've used Mag drive pumps in the past......they always seem to be a heat generating monster that will eventually die at the most inopportune moment in a couple of years.
I've also used Iwaki's and Pan World pumps.
I'm sticking with the Pan World pumps. Near to the same power curves/capabilities of the Iwaki's but at about 1/3 less the price and power consumption.
Whatever return pump you buy, plumb it so that you can easily change it out at a moment's notice, (use unions and ball valves anywhere you think you might need them), and buy a back up. A back up allows you to rotate the pumps out for cleaning and also gives you a spare in the event of catastrophe.