Grow Mediums DWC nutrient strengths

[kunkgrow]

Hi guys.

It seems common to find charts and recommendations for generalized hydro nutrient strength .

This got me thinking, is it adequate to include DWC on the same ball park as flood and drain for example?

With flood and drain the plants only come into contact with the solution once or twice a day depending on the feeding schedule .

On DWC however , the plant never has a break.

Wouldn't this mean that DWC feeding should be weaker than other hydroponic techniques?

 

[woody]

I would definitely say so mate. I primarily grow in a recirculated drip system.
Not the same as flood and drain but more similar to it than dwc

Drippers top fed the rockwool cube and then run through a clay pebble filled pot that the roots grow through. (Wilma system)timers come on for only 15 mins 4-8 times a day depending on plant size/stage.
Ive grown over 30 plants this way and have a decent nutrient schedule worked out for this style.
When i started dwc i thought i would use the same schedule and it burned the plants so i had to dial it back a fair bit.

 

[c@b420]

I'm gonna be setting up a waterfarm in a couple weeks. Would I run the drip just as what was mentioned until the roots hit the res, and then stop the drip?

Sent from my SM-G928V using Tapatalk

 

[woody]

Hey brew is that the gh waterfarm? Not familiar with the system but just after a quick look on google it looks like the roots are meant to just grow through the pebbles the whole grow and the drip ring is used throughout. Looks very similar to the wilma system i use only its for a single plant instead of 4
But you can buy dwc buckets that have a drip ring to top feed for the first week

 

[Muddy]

Generally speaking you'll probably run about half the nutrient strength depending on the strain. I would use that as the starting point and then adjust from there. If you can monitor your pH and ppm daily you should see your ppms drop while your pH rises. If your ppm drops quickly your solution is too weak. If your ppm rises your solution is too strong.

 

[woody]

Hey @Muddy nice to see you around mate. Learnt a lot from some of the threads you wrote a while back

 

[c@b420]

Yea it's the GH waterfarm. For a single plant. I've read about doing modifications to it to turn it into a dwc once the roots hit the bottom and into the res. So far I've drilled extra holes, enlarged the current holes a little bit and added another airstone. I've also read problems about the roots not being able to go through the holes provided and forming a a root ball on the top. That's something I'd definitely prefer to avoid. I would assume once the roots hit the res below and she starts to take off there would be no need to use the drip ring? I guess I just wondered if I should apply the wilma system to this until the roots hit the res. Drip 4 times a day for 15 minutes perhaps? In hindsight I feel I should've done what you mentioned with a different dwc bucket and seperate drip ring but I'm gonna try this out first and see.

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[roodles.prease]

I would definitely say so mate. I primarily grow in a recirculated drip system.
Not the same as flood and drain but more similar to it than dwc

Drippers top fed the rockwool cube and then run through a clay pebble filled pot that the roots grow through. (Wilma system)timers come on for only 15 mins 4-8 times a day depending on plant size/stage.
Ive grown over 30 plants this way and have a decent nutrient schedule worked out for this style.
When i started dwc i thought i would use the same schedule and it burned the plants so i had to dial it back a fair bit.

Hi guys.

It seems common to find charts and recommendations for generalized hydro nutrient strength .

This got me thinking, is it adequate to include DWC on the same ball park as flood and drain for example?

With flood and drain the plants only come into contact with the solution once or twice a day depending on the feeding schedule .

On DWC however , the plant never has a break.

Wouldn't this mean that DWC feeding should be weaker than other hydroponic techniques?

i read somewhere that in ro water seedlings max 70 ppm young plants 150 grown plant 250. but bcuz i add water about once a month the less water the more nutient ppm and bcuz water is used up the ppm can get very high and burn the plants. thats why i go with a seedling solution of 20 ppm and a young and grown solution of 50-100. in general what ever the recommendation i divide it by 20. bcuz experience of over feeding. if u follow the recommendations you kill the plants every time. small is beautiful. there is no advantage to feed high ppm only danger of overfeeding if the plant doesnt get enough nutes it grows bigger roots. in hydro the roots get big and after that the plant althou autos roots stay mini compared to photos.

 

[roodles.prease]

Hi guys.

It seems common to find charts and recommendations for generalized hydro nutrient strength .

This got me thinking, is it adequate to include DWC on the same ball park as flood and drain for example?

With flood and drain the plants only come into contact with the solution once or twice a day depending on the feeding schedule .

On DWC however , the plant never has a break.

Wouldn't this mean that DWC feeding should be weaker than other hydroponic techniques?

also consider lowering water level after roots have grown to let the roots breathe.

 

[HotBunz]

i read somewhere that in ro water seedlings max 70 ppm young plants 150 grown plant 250. but bcuz i add water about once a month the less water the more nutient ppm and bcuz water is used up the ppm can get very high and burn the plants. thats why i go with a seedling solution of 20 ppm and a young and grown solution of 50-100. in general what ever the recommendation i divide it by 20. bcuz experience of over feeding. if u follow the recommendations you kill the plants every time. small is beautiful. there is no advantage to feed high ppm only danger of overfeeding if the plant doesnt get enough nutes it grows bigger roots. in hydro the roots get big and after that the plant althou autos roots stay mini compared to photos.

This is how bad advice gets started. Someone posts crap like this and then some new grower reads it not realizing it is WRONG and passes it on and so on and so forth. Next thing you knoew we got grower starving their plants to death all because some fool "read somewhere" a bunch of wrong information.