Cannot Diagnose Plant Symptoms (?)

Under-Mi-Sensi · Dec 9, 2008

I'm using a one part nutrient system ("Sensi One Grow"), with a PH of 7.0...

I'm very careful about over/under watering...

I have a 400 watt HPS...

The big dark green ones were cloned during flowering... :roll:

What's wrong with my girls?

(2 Different Species/2 Different Problems)

buggs bunny · Dec 9, 2008

those plants lok to green and your ph should be 5.5 with ppm at 700

unforgiven1420 · Dec 9, 2008

ph 7.0 way too high for hydro.

Under-Mi-Sensi · Dec 9, 2008

700 PPM throughout veg? Same for Flowering?

I'll drop my PH, Thanks!

Bubba Kushman · Dec 9, 2008

My guess is a calcium deficency. Looks like a problem I had and could not figure it out for a while. One plant croaked! I flushed then added Magical then added it to 1/4 strenght nutes for a while and it went away. How is you water. Do you use tap water? I add pond water detox to mine. Also my ph in hydro is 6.5-7.0 so I dont think thats the problem. I think its either calcium deficent or your water. Or both! Just my guess.

SelfSupplied · Dec 9, 2008

I agree that this looks like a calcium difficiency in part. It also looks like your girls might not be getting enough water.

I'm not sure if those spots in your pictures are top or bottom leaves, or middle. My guess is middle. That makes me think it'd definitely a mineral def. in part, most likely calcium. If these girls are on 12/12 they should definitely have clear over 1000ppm of sensigrow (which is the same nutes I use.)

What I am sure of, though, is that your pH is too high. You want around 5.5-6.0 for these in a hydro setup.

Good luck dude!

K1Ng5p4d3 · Dec 9, 2008

im 1000% positive thats a ph problem right there. Go out n grab the book MARIJUANA GARDEN SAVER -- it has pics of every plant problem imagineable, and the solution for everything. Just lower your ph to 5.8, and youll be golden for all new growth

buggs bunny · Dec 9, 2008

SelfSupplied said:
I agree that this looks like a calcium difficiency in part. It also looks like your girls might not be getting enough water.

I'm not sure if those spots in your pictures are top or bottom leaves, or middle. My guess is middle. That makes me think it'd definitely a mineral def. in part, most likely calcium. If these girls are on 12/12 they should definitely have clear over 1000ppm of sensigrow (which is the same nutes I use.)

What I am sure of, though, is that your pH is too high. You want around 5.5-6.0 for these in a hydro setup.

Good luck dude!

when the ph is off it causes nutes to get loked out thats why pepole have to add supplements to cure the locked out nutes

Under-Mi-Sensi · Dec 9, 2008

Thanks Guys!

NoDrama · Dec 9, 2008

I can diagnose 1 other problem> See those small 1" rockwool cubes you put into the 3" ones? see how the small ones are all dark green? That's algae growth. You can cure that by covering all the RW with something that will block out the light. I use tin foil myself since its cheap and works and is easy to mold around the cube.

You have calcium deficiency caused by High PH, calcium starts getting locked out at PH over 6.0 in hydro. Just fix the Ph level and it should all start going well. Adding more calcium at this stage will probably just cause more problems.

Bubba Kushman · Dec 9, 2008

I have to admit I do not have a quality ph tester. My ph says 6.5-7.0 for hydro and and my girls are not locked out but it could be off and I dont know. My calcium problem was in soil now that i think about it.

Under-Mi-Sensi · Dec 9, 2008

Thanks for the algae Tip!

I also dont have a quality PH tester...

Under-Mi-Sensi · Dec 10, 2008

I already see a difference with the lowered PH...

Thanks for the info!

Benny4658 · Mar 23, 2011

Help! the tops of my plants are limp and drooping like they need water but I have an indoor grow and they get plenty but the tops are hanging down limp. Last night they looked great. It only happens when the lights come on for the day. Then they stand up and look healthy.

CHUCKTYLAH · Mar 23, 2011

NoDrama said:
I can diagnose 1 other problem> See those small 1" rockwool cubes you put into the 3" ones? see how the small ones are all dark green? That's algae growth. You can cure that by covering all the RW with something that will block out the light. I use tin foil myself since its cheap and works and is easy to mold around the cube.

You have calcium deficiency caused by High PH, calcium starts getting locked out at PH over 6.0 in hydro. Just fix the Ph level and it should all start going well. Adding more calcium at this stage will probably just cause more problems.

I agree with every word this guy just wrote

Cannot Diagnose Plant Symptoms (?)

Under-Mi-Sensi

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buggs bunny

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