high kh low ph

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Originally Posted by kui loach

I am confused, I was adding marine buffer or baking soda and my kh kept going higher as well as my ph.
Also under the web site filterdirect.com, I have a RO6102dint rodi unit. Please which filters do I need? I ordered filters 1,2,3 (sedimt filter and 2 carbon filters). Do I also need a 6th stage resin filter or simply resin refill bag? Appreciate any help

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I have the same RO DI unit. Actually I get a new one every other year because it is "almost" cheaper then replacing the main membrane. It is a little more expensive......but you get ALL of the filters new so in the end it is cheaper then replacing all of them.

I usually have someone who buys my old ones for around $30 so it covers the shipping of my new one. :)

As for your PH issue, I posted the same thing. Grrrrr What is the dosage per gallon of the pickeling lime or baking soda? I can't remember.

Thanks,
Angie

Do you have any open windows or fresh air able to get to the tank?

Not trying to hijack this thread, but if Kui lives anyplace close to wisconsin.......Heck NO we don't have any windows open. It's been -40 below zero here!!!! I have an airline in the tank, but that's not exactly "fresh air".

That could be a problem... atmospheric co2 can be a cause of a PH drop. Here's a test: take a cup of water from the tank and take it outside for a minute while agitating the surface, then take it back inside and test the PH in that cup immediately. Do you see a difference?

I just bought the new RO/DI unit Dakar is referring to. I saw it on ebay, but dealt with the company directly after doing my research on various units...this IS the best one by far-plus the filter canisters are clear so you can better monitor their wear and tear. You can call the company directly at 714-953-9009 and pick their brain. Ask for a technician...they knew the most. Also, make sure you tell them the water is specifically for your tank; that way they thow in the second DI filter. If the RO/DI unit is used for drinking water, this final 6th stage is different to re-intoroduce some minerals for flavor. Mine was $150, including shipping. I also got an automatic shut-off float for my 10gal container, a hose-adaptor, and a preasure-regulator (anything over 80 could pop the unit, and reduce your water quality). All three extras were a $20 total. They have replacement filters too if you want to price that route.