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It's a 9" backwash filter. I was told it was 4gpm, but I wanted to be sure so I pulled the drain valve to visually inspect the flow restrictor. It's actually a 5 gpm button. That combined with the effective distance of the drain being closer to 40 feet, I clearly had to use 3/4" for the...

.. In some states I was reading that they prohibit backwash with iron and manganese from going to the septic due to occasional failures*. I figured I was doing my septic a favor by installing the filtration system. I imagine there also lies the possibility that iron and manganese could...

The engineeringtoolbox.com seemed to work without crashing. The other ones want other settings (like viscosity) that I'm not sure what to put in. Plus the Javascript crashes. I ran through numbers : I'm currently at -> 4gpm @ 20 feet = 3.7 psi loss. The manufacturer recommends -> 7gpm @ 20...

Wait, can you do that? There is a drain behind the wall (I'm not afraid to rip the wall out to get to it). I didn't think it was good to pipe down all the iron and manganese backwash to a septic, because that would contribute to solids that need to be pumped out. No?

It's around 9 degrees Celsius in the summer. Sometimes even colder. That reminds me, I need to wrap my pipes because condensation is everywhere. My bypass valve looks like it's leaking, but it's really not.

I was shining a really bright light behind the tank so I could watch the media, water, and air inject into it. Not nearly as good as a clear tank might be, but cool to watch. The air intake cycle sometimes "whistles" a bit. It wakes everyone up in the middle of the night. So I moved it to...

No doubt, I'm installing a vacuum breaker for sure!

I didn't know that about Filter tanks! Very useful information that might save me someday. I had no idea they didn't like negative pressure. And the vacuum breaker, I didn't even know those existed, but that makes sense. Thank you for the info. The vertical drop is about 17 feet. The...

I only have 6gpm coming from my pump so I purchased a 9" vortech tank KL system with 1 cubic ft that requires only 4gpm backwash. So far it is working great, though I've only had it barely a month. I have read the vortech tanks require less backwash, though they aren't as versatile as a...

I did look at the PSI at the tank and it was hanging at a little over 45 psi during the backwash stage. The rate is 4 gpm. Thanks, that all makes sense!

Have you determined your well's gallons per minute capacity? Make sure it has plenty to handle 2 sq ft of that stuff, it's heavy! A lot of sites show a flowrate lower than it really needs to be. I went with Katalox Light and a 9" vortech tank because I only have 6 gpm. It works wonderfully.

Greetings all. I have a question about the maximum length of the drain hose used for backwashing. I've read that if you go over 20' that you should use a 3/4" inch hose instead of 1/2". If I needed, say, a 30 foot hose, would increasing the size of the DLFC to add a little extra pressure in a...

Greetings everyone. I'm new to the forums. Just recently bought a house with well and septic, and the well has iron and manganese so I figure I better get learning. A well test was done before the title transferred and I bought and installed an AIO Katalox Light filtration system based on...