Too Much Or Too Little> ? Ionic With Calmag In Uc

[snoopytime]

Hi guys -

Undercurrent 16 8 gallon buckets, approx 130 gallons total, chilled, CO2, AC, running:

70ml of CalMag Plus
400ml of Ionic Grow
little shot of IBA solution

PPM = 300
PH = 5.6

1 week in UC, 4" rockwool in 8" netpots on hydroton

Roots are bomb

Plants look fried to me, what you guys think?

Sprayed with Magic Green incase its lockout and the leaves are missing anything.

Flushing pure RO right now

 

[EventHorizan]

Hi guys -

Undercurrent 16 8 gallon buckets, approx 130 gallons total, chilled, CO2, AC, running:

70ml of CalMag Plus
400ml of Ionic Grow
little shot of IBA solution

PPM = 300
PH = 5.6

1 week in UC, 4" rockwool in 8" netpots on hydroton

Roots are bomb

Plants look fried to me, what you guys think?

Sprayed with Magic Green incase its lockout and the leaves are missing anything.

Flushing pure RO right now

Are you pulling air to your air stones from the room with high levels of c02?

 

[snoopytime]

Thx Event - air pumps are in a plenum drawing outside air. CO2 is around 900. thx for replying!

 

[Robes]

New to DWC, but flushing possible salt build up seems to be a good idea. Is heat a contributing factor? The lower fan leaves look like some type of nutrient lock out symtom to me too.

 

[Robes]

One other thought, your grow medium reminded me of an ebb and flow I used once with the same rockwool/stone set up which did actually wick salts like a magnet and i simply flushed from the top down with a light solution to remove salts.

 

[EventHorizan]

One other thought, your grow medium reminded me of an ebb and flow I used once with the same rockwool/stone set up which did actually wick salts like a magnet and i simply flushed from the top down with a light solution to remove salts.

he is only been in the median a week and its not top feed. Its uc, not much salt build up can ac-cure in the median ...

 

[Robes]

My suspicion was that it was coming from the rockwool wicking up from your grow module and not from top feeding the plant. Just a though I picked up from Cervantes.

 

[Robes]

I do agree with you that a week is too short of a time frame for the plant to be showing signs of a mag lock out.

 

[snoopytime]

Thx guys for the checkin - the flush is helping! Gonna re mix nutes at real low like 1/3 to 1/2 of what we put initially. thxx!

 

[Robes]

Glad to hear it !

 

[gtrmike470]

One other thought, your grow medium reminded me of an ebb and flow I used once with the same rockwool/stone set up which did actually wick salts like a magnet and i simply flushed from the top down with a light solution to remove salts.

How often ? In flower as well? Should I be using Cal mag in a mixture of Hydroton and perlite? Or is that more for coco?

 

[Robes]

Wow I was just reading a post that included a link to current culture that said they recommend we start out at 150 ppm and top out at 900 ppm at the end of the cycle. Makes sense though when you think about it.

 

[snoopytime]

we now put in .5ml calmag and 2ml per gallon of Ionic grow .. 150 ppm . . will observe and report ;)

 

[Robes]

What kind of air pump do you use?

 

[Robes]

Im shopping them and think an ap-60 pondmaster may be my best buy for a UC4 set up at about 30 gallons

 

[snoopytime]

we have 2 of these http://www.bghydro.com/commercial-air-7-pump.html

 

[RoeBuck]

How often ? In flower as well? Should I be using Cal mag in a mixture of Hydroton and perlite? Or is that more for coco?

It depends on what kind of water you are using. If you're using RO, add enough to raise your starting ppm to between 100 - 125 (500 scale). If you're using tap water you may not need any cal/mag. I can't use my tap water. The ppm is between 250 - 275. If you haven't already, test yours and see where it's at. If you end up needing it, add it every time you do a rez change.

 

[RoeBuck]

Wow I was just reading a post that included a link to current culture that said they recommend we start out at 150 ppm and top out at 900 ppm at the end of the cycle. Makes sense though when you think about it.

I've never gotten anywhere near 900 ppm and can't recall seeing anyone get that high. Depending on the strain I usually top out between 450 - 500. rdwc is very easy on nutes. Current Culture actually has 4 different feeding schedules and the ppm varies depending on the schedule.

 

[Robes]

Post more pics please?

 

[snoopytime]

OK Robes let me see if i can get a few shots taken. Supposedly they are stabilized out nicely at the 2ml per gallon of Ionic Grow. Thx