I noticed you said previously you were doing 80g water changes? Is that still accurate? Roughly 80g every two weeks? If you may, could you give a brief run down of how you have it setup so 80g doesn't drive you bat **** crazy? Seeing as my whole setup doesn't hit 80g it just seems like you would end up with a million dollar water bill with all the rodi waste water and a small mortgage in salt. Also what salt do you currently use and have you used?
Well, it's all relative I suppose. LOL!
I have 4, 40 gallon rubber made cans on rollers. Two of them have float valves on them for R/O water. I decide what day I want to do the water change and start filling the cans a few days before. I can just plug in the R/O and let it run all day........the float valves shut it down when full. IF they fail, the cans are already in the garage, so overflow is no big deal. It takes a full day to fill each one.......longer when the weather is very cold. The actual amount of water is likely closer to 65-70 gallons that I change. The buckets don't fill all the way.
I mix and heat the salt the night before. I use "Microbe lift" salt. I am extremely pleased with it. It is very fine and dissolves quickly with NO precip. It is designed to work with a calcium reactor.......as it does not have a ton of calcium. It does however have magnesium. I have not needed to dose much mag since I started using it. It keeps it very stable. I have just boosted it a little here and there, but just because I worry about these things. Not sure it is necessary. It does not have a high alk though. If it sits more than a day, it will have an Alk as low as 7.5 DKH, so I buffer accordingly.
I have plumbed a drain into the garage from the bottom of the tank. I can do an entire water change from the garage without needing to bring the cans inside. I drain exactly the same amount of water that I have made, and simply pump the new back in. The actual change only takes about 20min total.
A look at the dry side of the tank......
As for the water. I use a booster pump to maximise the efficiency of the R/O unit. It claims it can give a ratio as good as 1:1, but I doubt that very much. However I figure I get the best ratio that I can. The water bill is not that bad........also, we are blessed with damn good water in the bay area. Often the incoming water has a TDS of 30 or less. So it doesn't tax the unit nearly as much as other parts of the US.
As for driving me crazy?? I have had tanks for almost 18 years now. So I built this one to be as easy on maintenance as possible. The skimmer, GFO, Carbon, Doser, Kalk, top off, calcium reactor and water changes are all accessable in the garage, so I don't have to climb under the tank to get to them. In many ways this is the easiest tank I have ever had. However a tank this size........you just have to realize it takes a lot of work. I am committed to this bad boy, so I do the work. Now that the corals are growing, and looking good, it is reward enough. I get my motivation from visualizing what the tank can, and will be. This is the fun part. The first year was the toughest...........hoping the lights would work, and the overall layout / set up would work as good as I hoped. All the kinks are getting worked out, and it has so far been a recipe for success. Now it's up to me to keep it going for the next few years. I believe it will be stunning, and it is all the motivation I need.
That said.........disasters happen. I am very aware that one stupid mistake could send me back to the drawing board. Just the nature of the game. I woke up to my pumps cavitating about 4 weeks ago. A snail had managed to get into the drain of my frag tank that is plumbed into the main tank. It plugged it up, and 65 gallons of water drained out before I realized it had happened. I came downstiars to see the heaters smoking, the frag tank overflowing and the refugium empty. It took me 10 hours to get things running again and to test all the pumps / heaters / water params, etc.
The alk had dropped from 9.5 to 7.5, the tank temp dropped from 78 to 72, the salinity had dropped because my top off was trying to replace what was being drained..............etc, etc, etc. Luckily I only lost 1 fish and two large corals that were all high and dry for however long this had gone on. One stupid mistake is all it takes.
This is one of the most challenging things I have ever done. Isn't that why we do it?? :dance: