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I think it is way down. Bubbling use to drop the tds a lot. Now without bubbling its only 3. When these batched are done, I'm going to bubble for a week and see if the tds of 3 drops.
Hows the tank? I have to see it.
Making first RO and DI water since the new well. After making a fresh 25 gallons through the RO system, my TDS is 3. Before my TDS was 14 after bubbling for a week. Never has a TDS number for previously fresh RO water, but it must of been much higher than 14. My DI was do for replacing before...
Drain wise, I am a big fan of the Herbie method. Its silent and moves a lot of water. It uses a full siphon and has a back up emergency drain. Reef Central has a nice thread on its principals.
They went 285, I'm hoping it solves my iron problems. They are still working on it. Major pain in the butt...
Edit: Just tested my iron and its gone from over 5 to 0.3...so far so good.
My old well was only about 50 ft and full of iron. I always bubble my ro water a week before running it though the DI. The new well is down 285 feet. Supposedly really nice water.
On my built in weir, the water is going through at the 3/4 mark on the teeth. The top of the weir is about a 1/4 inch from the top of the tank. This keep the water level about an inch from the top overall. By slowing or increasing the return control valve, I can raise or lower the water level...
When you think about the money you have in your tank, a few hundred dollar controller is great insurance against a heater designed to eventually fail. Plus they are a fun toy. Apex support is top notch in case you run into problems.
I'd go 220...other than the reach, everything else is better...:) Add 4-6 inches of rock minimum and you wont even notice. Think of how that sucker will look...if you get the 180, you will be kicking yourself in 6 months...