HELP !! So confused about HYDRO PPM?

[mannyonelover]

alright this is my first hydro grow (mystery seed) did all my research and my girl is growing quite vigorously however she has had that dam leaf curl and seems to get worse, from start of vegging to 1 week and 1/2 of flowering she still has the curl?
Here are the details 10 g tote ,Temp 75ish and 50 ish at night, I live in country so we have well water coming out the tap a PH 7.1 and around 175 PPM , and using FoxFarm TRIO.
SO here its where it gets interesting I followed directions on feeding and it said around 600ish PPM during veg and increase during Flowering, I was very careful not to go over in fear of nitrogen burn due to curling so I backed up on nutes and I mean really backed up around 210PPM and that including original read so just about only 100 PPM of nutes but I still have curl and my PH keeps dropping,
It looks like nut problem but Im afriad to crank up the nutes can thjis be the culprit?
Like I said I have been really stingy with the nutes and PH has been shaky but dont know what to do?

 

[CashCrops]

The claw can be from lockout, have you tried just feeding water to flush once or twice then go back to nutes?

Ps. they look healthy

 

[miccyj]

PH swing can be a headache in a system like this, what are you adjusting the pH to? And what is it swinging to?

 

[miccyj]

Oh, and have you got an air stone in the rez?

 

[Dr. Who]

Hmm. Nobody has bothered to mention that 175ppm water out of the tap is a bit high for use?
Whats IN that 175ppm water to make it that high?
I don't use any water from a tap over 150ppm. 175 is close and it really looks to me like it may be a Cal def !
Clawing and some what stunted new growth.....Cal def.
Have the roots slowed growth and are getting "fat" and not building more of them? Cal def.
Add a Cal/Mag product at full strength as per the makers directions.
Don't use GH CALiMAGic as I don't think you need any more Iron in the system right now.

Consider RO down the road. Always add a Cal/Mag to RO and with RO you should actually see an increase in quality and yield!

 

[miccyj]

Hmm. Nobody has bothered to mention that 175ppm water out of the tap is a bit high for use?
Whats IN that 175ppm water to make it that high?
I don't use any water from a tap over 150ppm. 175 is close and it really looks to me like it may be a Cal def !
Clawing and some what stunted new growth.....Cal def.
Have the roots slowed growth and are getting "fat" and not building more of them? Cal def.
Add a Cal/Mag product at full strength as per the makers directions.
Don't use GH CALiMAGic as I don't think you need any more Iron in the system right now.

Consider RO down the road. Always add a Cal/Mag to RO and with RO you should actually see an increase in quality and yield!

Hmm your right, that water is quite hard. I buy distilled water in 1000L IBCs, this is because I don't have easy access to tap water to run an RO filter and the place I buy the water guarantees <1 ppm tds. It costs me $0.40/L.

 

[Dr. Who]

Oh, shit yeah,,,,I forgot. The swinging pH also indicates a Cal def in the system.
Adding a Cal/Mag will help stabilize those pH swings!
A lot of high ppm waters can BE from Cal. But in your case, from the pictures and your info. I HIGHLY doubt it!!!!
So like I said,,,,No added Iron in your Cal/Mag that you pick to use, as I feel that the ppm's are metallic salts in your water.