Indoor Growing Scrog

[JP1]

nutes are getting recirculated

Always been curious about recirculating systems. I know the runoff ph should be close to the input ph as long as the volume of feed and total fertigations are plenty. In my head I think the plants drink what they want after each feeding and you basically flush out what's leftover back into the rez each fertigation. That doesn't throw the fertilizer mix out of balance eventually? EC doesn't rise in the rez eventually from the concentrated salts being flushed back in? How often do you guys empty and reset your rez with all fresh feed, or are you guys just constantly topping it off with fresh mix the whole grow? Seems similar to dwc, but I can't wrap my head around that either

 

[GasPlease]

Always been curious about recirculating systems. I know the runoff ph should be close to the input ph as long as the volume of feed and total fertigations are plenty. In my head I think the plants drink what they want after each feeding and you basically flush out what's leftover back into the rez each fertigation. That doesn't throw the fertilizer mix out of balance eventually? EC doesn't rise in the rez eventually from the concentrated salts being flushed back in? How often do you guys empty and reset your rez with all fresh feed, or are you guys just constantly topping it off with fresh mix the whole grow? Seems similar to dwc, but I can't wrap my head around that either

I mix 5gal at a time and only fully change res when switching from veg to bloom. Since Im only mixing 5gals Im topping with new nutes every week keeping things fresh. I check my res ec and ph daily and make adjustments based off that.

High ec means she drank more than she ate and I can add some RO water to get ec back in range. If its low that means she ate more and I might need to add fresh nutes depending on how far off target it is. If it stays in range she is eating and drinking at the same rate which is best.

Ph can change from multiple causes even which nutes the plant is consuming from the mix can change ph. I just adjust it with up and down daily. I keep it in the recommended range but allow it to float up and down.

In my head I think the plants drink what they want after each feeding and you basically flush out what's leftover back into the rez each fertigation.

This part is correct it is technically a guessing game as to what nutes have been used. The small batches keeps things fresh for me.

Edit: I'll add that you have to keep notes mental or written on what happens with the res on the daily. Its the changes you make daily that paints the big picture of whats going on in the res. If you feel like its stale or the ratios might be messed then drain and add fresh mix.

 

[GasPlease]

I mix 5gal at a time and only fully change res when switching from veg to bloom. Since Im only mixing 5gals Im topping with new nutes every week keeping things fresh. I check my res ec and ph daily and make adjustments based off that.

High ec means she drank more than she ate and I can add some RO water to get ec back in range. If its low that means she ate more and I might need to add fresh nutes depending on how far off target it is. If it stays in range she is eating and drinking at the same rate which is best.

Ph can change from multiple causes even which nutes the plant is consuming from the mix can change ph. I just adjust it with up and down daily. I keep it in the recommended range but allow it to float up and down.


This part is correct it is technically a guessing game as to what nutes have been used. The small batches keeps things fresh for me.

Edit: I'll add that you have to keep notes mental or written on what happens with the res on the daily. Its the changes you make daily that paints the big picture of whats going on in the res. If you feel like its stale or the ratios might be messed then drain and add fresh mix.

So far with my 3 rockwool grows the ec has stayed stable and I only have to adjust ph a lot of days. The few days following the net and after schwazzing they tend to drink more than they eat so I have to add water.

 

[GasPlease]

One more thought about recirculating systems and the res. Just like any grow the environment plays a big part in what the plant does and can even affect ec and ph. I dont have perfect control in all my tents but I do everything I can to keep things in the correct ranges. Always monitoring dli, vpd, and keeping the air flowing.