nutrient question

I was reading the Marijuana growers handbook by Ed Rosenthal. It has a nutient/water solution in ppm.

Germ 325 ppm

fast growth 530 ppm

pre flower 350 ppm

flower 275 ppm

To me the pre flower and flower seems really low. I thought you were suppose to be anywhere from 800 - 1500 plus ? I know these are guidelines and every strain is different. Has anyone flowered with that low of a ppm?

that is incorrect. i run up to 2000 ppm late into flower

wow. What kind of strain are you growing? What medium and how are you growing it?

afghan kush, white rhino, hydroton, ebb and flow

I got a 4x6 table under one 1000 watt on a light rail, with fans, 68-74 air temps, 45-55 humid, 5.8 ph and 680 ppm. I started at 630 ppm but it seems to raise after every flood.

My plants are growing slow, some a little twisted or curling, pale green color and some have yellow spots. Am I over fertilizing them? I use organic liquid nutrients. The Pure Blend Pro series from Botanicare. I would greatly appreciate any help.

yes if your ppm is rising i believe you have too much nutes in them. is the water evaporating? how many times a day are you flooding? have you calibrated your meter?

Meter is fine. PPM was rising. I just did a flush with clearex. Ima going to refill my reservoir and start at 400 ppm and work my way up from there. I noticed my ph is always on the rise. I think it's my rockwool. . . . My reservoir in chedoes not have a li and there is a dehumidifier in my room to keep the hunmidity in check. Is that gonna cause a problem? It may be evaporating. . . . .

i dont use a lid. try to keep it out of direct light tho. you want to find the point where your ppms are falling a little bit each time you check. that will give you a good ppm level. but if your water is evaporating it will rise also.

you should drain your dehumidifier into your resevoir

I heard dehumidifier water has harmful stuff in it?

i always drain my humidifier into my res. when im using it. dont know about any harmful stuff, it never hurt me. good luck!!

If you tried it and it works then I trust you. I saw a forum a while back and some people said this and that which made me skeptical.

i started with 4x6 table and 1 light (1000w) on a rail. 2 (1000's) will definitely push your harvest up significantly. i got the add a light for my light mover. i love the botanicare stuff. are you filtering the water? you should def look into hygrozyme and beneficial enzymes.

I use r.o. water that is usually 10-20 ppm withnthe whole botanicare pureblend pro plan and I also use humboldt county's bushmaster, gravity, and purple max. I also use a silica ph up to benefit my roots and i add hydrogen peroxide. I am thinking of getting rid of the whol table idea and going with fewer bigger plants in dwc buckets. I think I would yield a lot more in the same space. I am liking how my dwc mother is growing right now compared to my ebb and flow buddies. . . . .