Wanted to update
Tank has been up for 4 months. Thing was a heavy beast. Still check the seams almost daily. fairly happy with it. not so sure how I feel about the extension sump but I am changing things around to use it as a frag / isolation tank. Does not work well for a refugium in my opinion, flow is weird.
For the past 2 months I have not done much to it. Just added water to ATO and feed the fish. Life have been a bit crazy outside this hobby so I am lucky its just trucking along. Have not done a water change in over 2 months, have 60G currently mixing. I almost want to mix another 60 in my other vat and do a 120G large water change. then let it settle, start testing regularly and then start dosing Kalk.
Its about time to get things in line and let if flourish like my old 125. I need to thin out the Bta in the tank, stop counting at 50. And worried the water change will bring many more splits.