PPM went up on it's own.

I know I have read about this before but can't find it. My PPM jumped on its own up 200. Whats this generally mean?

Did the water level decrease between readings?

ak.fortyseven said:

Did the water level decrease between readings?

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yes it did

This mean that the plants are drinking more water than taking in nutes. completely normal.

miztaj said:

This mean that the plants are drinking more water than taking in nutes. completely normal.

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Sweet thats what I needed thanks man. I didn't think it was a bad thing it was a few days ago and she looks fine so. Thanks again.

if you lower your solution strenght to the point of the plants drinking water and taking up nutes at the same rate this would be the sweet spot, or even if ppms go lower. many people make the mistake of pouring more and more nutrients into tanks thinking this is good, the plants simply will not use all of it, you dont need 1600ppm to grow good dank heavy plants

morrisgreenberg said:

if you lower your solution strenght to the point of the plants drinking water and taking up nutes at the same rate this would be the sweet spot, or even if ppms go lower. many people make the mistake of pouring more and more nutrients into tanks thinking this is good, the plants simply will not use all of it, you dont need 1600ppm to grow good dank heavy plants

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Yea, I figured to replace the water the pant drank so I topped it off with just water getting it back to the proper ppm.

Tcm04 said:

Yea, I figured to replace the water the pant drank so I topped it off with just water getting it back to the proper ppm.

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this is exactly what you want.. once you find the sweet spot. each day all you have to do is top up with the water and eventually do a res change..

Always a rule of thumb.. ppm's go up = plants drink more water then nutes, ppm's go down.. more nutes then water.. You wanna find that sweet spot where it barely moves on you..

Over ventilation and excessive circulating fans also often lead to increased transpiration and this causes an increase in PPM as to transpire more the plants have to take up more water but not necessarily nutrients. A plants roots take up nutrients by osmosis. This means if the ppm gets to high in the reservoir no nutrients are taken in by the roots but water still is taken up thereby raising the ppm even higher. I would suggest that you lower the ppm a hundred points or more below what you were maintaining for a ppm prior to this problem Your water level should be topped off at least daily, more often if it is a small reservoir.