HYDRO Help DWC

[GhettoStyle]

Friends, can you tell me what kind of problem is nutrient deficiency?

can you tell me my tap water is 0.2 EC? Can you tell me to what EC value do I need to add cal-mag?

light Quantum Board 240W
LED 15DLI 230PPFD


pH 6.0 EC 0.7-0.8
fertilizers - Canna Aqua / BAC Cal-Mag 2.0

can you tell me how to make a solution correctly, how much EC to add cal-mag? what values should I start with and how to increase the EC correctly

[Wayzee]

Hey mate, what nutes are you using? What temperature is your water?

[GhettoStyle]

I use Canna Aqua / temperature 21C

[dirtymike]

Sulfur, magnesium and calcium deficiency. Probably a PH issue also.

[GhettoStyle]

From the very first day, I've been keeping the pH in the range 5.9-6.0

[GhettoStyle]

Please tell me how to deal with nutrition in order to avoid such a shortage in the future.

[Wayzee]

Ph is probably on right on the edge of being to high at 6.. I'd be aiming for 5.5- 5.7 until flowering then they will want between 6-6.5. different nutrients are absorbed at different pH levels and if you go out of range to often ( especially high) you might get lock out. Try to keep your water between 19-21 warmer water and you will get problems at the roots which will then affect the rest of the plant, cooler water will put your plants to sleep or make them dormant.. As for deficiencies, dirtymike is good at reading plants, try adding some cal-mag and sulfur at nute change. Which reminds me how often are you changing solution and are you flushing with straight water before adding new solution?

[GhettoStyle]

I change the solution once every 2 weeks! I do not wash with clean water! You say that pH. 6.0 It's on the edge! But I looked at the manual and read the articles and they say that calcium and magnesium are absorbed when the pH is above 6.0

[Bluey]

Under 5.8pH is too low in DWC.. Aim 5.8 yo start and let it climb.. Under 6.2 you will typically have calmag deficiencies.

Edited for DWC. If DWC with a reservoir always start your tank at 5.8 and allow it to climb over a 24hr period then reset to 5.8. Change your mix every 7 days. 14 days may be too long as your plants will strip available mag and cal out of the solution in much under that when in veg.

[GhettoStyle]

The website growweedeasy says that magnesium and calcium are absorbed when the pH is above 6.0

[Wayzee]

Interesting. Are you growing in coco as your medium?

[GhettoStyle]

No, there is no coconut! I use cubes for seeds and expanded clay!

[dirtymike]

He is ruining a deep water culture grow. Things can go good or bad real fast. Constant monitoring of all environmental constraints is a must. You can grow some Hugh yields in DWC or lose it all to a human error. Grow weed easy

[Wayzee]

I follow the feed chart that is recommended by the nutrient manufacturers, change out mixture weekly, drain old mixture flush through with pH balanced water and refill with new mixture.

[dirtymike]

Textbook, me encanta libros

[Wayzee]

I love books too 😁 problem is finding one that corroborates with the last lot of information I read. 😂