There should be plenty of ppm to give you an accurate reading at 120 and 150.
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Well it is what it is, oh your RO water and feed the ladyās. Lol
Iāll contact the company that makes the system to see if this is ānormalā.
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Good idea
RO roughly removes 90% of TDS. With your tap at 850, thatās pretty close. About 86%
Agreed, just still hung up on the PH
Got this reply from the R.O. system seller:
The RO system will give you between 90-99% rejection rate as long as your water a TDS of 750 or below. The higher your TDS levels are, the lower the rejection rate will be and the slower the unit will work too. The unit you purchased has the alkaline filter which is designed to increase the pH of your water by 1 - 1.5. If your regular tap water has a pH of 8.3, after the alkaline filter it should be [between 9.3 - 9.8]
If you would like to lower the pH of the output water, you can remove the alkaline filter which will also allow you to lower the TDS of your output water by 15-20 ppm.
Mystery solved.
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The RO ppm readings seems awful high for a new RO system.
Mine reads 4ppm using my $12 TDS meter and yes I do use my $10 yellow Ph meter to check the Ph (reads around 7.2 where my source water is 250 ppm and 8.6 Ph) and it works just fine at determining Ph of the RO water just takes a bit longer. Every meter is different in its nuances and each user needs to get familiar with those nuances.
I would contact wherever you got the RO unit and ask what should the reading be with a new unit because those readings donāt seem correct assuming your TDS meter is accurate. Far to high (although will be ok for plants) but if I bought one and had those readings I would return it or have them send you all new filter set because the ppm should be way lower and the Ph also should be closer to 7.0
As far as lowering the Ph if you use chemical PH down from General Hydro it will assist in killing and good critters in the soil. If you donāt want to kill the critters use simple citric acid is cheap and works great in living soils. You will use maybe 1/8 teaspoon per gallon to get your water from 8.5 down to between 6.5-7ph. And yes it is stable sitting for days at a time in just water. Iāve tested and retested it and it holds.
If you use living soils with natural nutrient input all this Ph and ppm and water to run off and flushing all goes away. All this extra crap that people have to do are because of what chemicals they use that kills the critters so they canāt regulate the soils Ph and nutrient uptake.
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Ok sorry @AAA
I just read your last post re removing the component that ups your Ph etc so disregard part of my post above
Normally a good RO with pre filter carbon block, RO membrane and a post filter carbon should give you close to 7.0 and maybe 50ppm at most
take a look at my pics
half of mine look a lot like that after burning with an LED too low AND putting in full sun without any transitional period.
i know you are sorting out your PPMs and ph, but remember Occams Razorā¦
annnd i just realized this thread is really old.
did you ever figure it out?
Gosh @AAA @Nicky I am.going to steal.this link.
After reading the article, I need to revisit this.
Thanks for the post guys.
Here is what mine looks like.
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Did you get the issue figured out?
No,
But, on my journal there is some history behind it that might make a difference.
The start of the problem started a couple of weeks agoā¦ here is what happened up to dateā¦