TDS readings off RO water?

Indoor Growing Grow Room
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My tap water is around 350 ppm, when I first got RO Buddy it brought it down to 2-3 ppm. I noticed on last grow it was starting to rise up to around 10 ppm, probably time to replace membranes.

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Yeah mine is about 350 what benefits did you notice from the Ro water

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The main reason I wanted to use RO was to be sure that I know exactly what my girls were getting. So I wouldn’t say there’s a benefit from the RO water, just the ability to control exactly what the plants are receiving.

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The pot saucers could be the culprit. I made that mistake and the plant was wicking the run off back into the root zone :love_you_gesture:

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I don’t use RO. I understand and share @Bulldognuts desire for control but I personally can’t justify the water consumption. Besides, I like the minerals described in my water report in my ~140 TDS tap. I simply fill a bucket and let it sit a cpl days to dechlorinate then make adjustments.

I grow in soil and use 1/4 cup Dr Earth organic dry top dress for the life-cycle stage every two weeks so my adjustments are Cal-Mag+ (I run LED lights and find it helps to add a bit occasionally), I always use phosphoric acid to lower pH, and every 7-10 days: Real Grower’s Recharge, and Mammoth P just to help break down the top dress and root zone symbiotic exchange.

I water when the pot is lite until I get very slight runoff into the saucer and allow the plant to absorb it back thru the fabric pot. I am paying for the additives so I want the soil to get it all. I am not supplying support to the plant I am supplying support to the soil. The Dr Earth breaks down over time and the plant takes what it needs when it needs it. No burn, no salt build up. Two-three weeks from harvest I stop top dressing and other additions, and only use pH dechlorinated water.

I do ck soil pH occasionally just for information purposes but I don’t worry about runoff pH or TDS.

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Ok quite different than how I am doing it I am going to keep this post for reference Look into your method further in the future thank you for the input.Same as my idea on the RO wasting a lot of water every day I use 5 to 10 gallons some days that’s a lot of waste down the drainBut my water is 350 to 400 ppm

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You can mix the ro into your tap water to bring down the ppm. That way you’re not going through so much ro water.

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