How often to change-out nutrient reservoir in drain to waste?

Overgrowtho

Overgrowtho

Well-Known Member
How often do you guys running soil-less drain to waste actually change your fertigation water/nutes/clean rez?

Sounds like most people are doing 7-14 days or so. What actually works best for balancing your time + plant health?

Nothing wrong with going the full 14 days yeah? Maybe even 20?
 
Overgrowtho said:
How often do you guys running soil-less drain to waste actually change your fertigation water/nutes/clean rez?

Sounds like most people are doing 7-14 days or so. What actually works best for balancing your time + plant health?

Nothing wrong with going the full 14 days yeah? Maybe even 20?
Click to expand...
When the tank runs out... it refill it. Normally 10 is days depending on stage
 
7 days normally, 10 max in early veg.

Just monitor the PH and EC/PPM every day, once it starts drifting do a change
 
I dont think I ever really noticed the reservoir drifting in terms of PPM/PH in this drain to waste setup.

Maybe I am not looking close enough????
 
I'm using pH test strips and its always around 6 PH so I'm not fussed about it. The nutrient I use automatically brings the water to that pH.

EC is not fluctuating too, it stays at around 1.1 where I want it.

Unless there is significant algae building up in the drain to waste reservoir, why change the water?
 
I'm using pH test strips and its always around 6 PH so I'm not fussed about it. The nutrient I use automatically brings the water to that pH.

EC is not fluctuating too, it stays at around 1.1 where I want it. Unless there is significant algae building up in the drain to waste reservoir, why change the water?


twentyeight.threefive said:
Are you measuring pH and EC before each feed?
Click to expand...
No I'm feeding a couple times per day by automatic fertigation, pump on timer.
 
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