ph testing methods. burnt new growth, possibe ph problem

Drella

Well-Known Member
Does everyone flush their fox farm ocean forest before use? i didn't, and i think i have a nute problem. I have eight clones i transplanted from cubes to five gallon pots. five days later the clones are growing, but new growth on two of the clones are yellowy with burnt tips. i didn't use nutes yet because a friend had told me not to use nutes for two weeks on fox farm, because it has enough for two weeks. but the owner of the hydro store i go to told me to start with nutes, because of the yellow leaves.
that was fine but im a newb. i didn't feel comfortable with using the dyes for ph. ("is it blue, green, or yellowy green.....FUCK!") So I bought a milwaukee ph51 digital ph meter. got home and found on the internet people have calibration problems with it. I bought the ph 7 for calibration, and its been soaking for seven hours before i use it for the first time. just confused? I appreciate any feedback!
 

Drella

Well-Known Member
anyone have any ideas. I'm going to nute them tomorrow when the soil is dry, botanicare pure blend pro grow, 1/4 strength.
 

bigbuddc

Well-Known Member
i wouldnt use any nutes get some more input im having similar issues and everyoune told me it was either nute burn(over fert) or my pH was off anyway everyone said flush with water that was properly pH'ed between 6.2-6.8 but it looks like over fert. over fert can cause the plant not to soak the nutes up so it looks like a deficiency when its really over fert.
 

Drella

Well-Known Member
sorry guys. like i said i'm a newb. i haven't used any nutes yet. like i said i was counting on the fox farm ocean forest to have enough nutes for two weeks
 

Drella

Well-Known Member
what's weird is the other six clones don't have burn. but the new growths are light green, borderline light-green-yellow.
 

Drella

Well-Known Member
what do you guys use for testing ph. it was just hard for me to tell what was 6.5. 7 is blue 6 is yellow. the color i sided with was a yellowy blue. but some could say it was blue. frustrating. that's why i got the digital ph meter, but people say they have calibration problems. is anyone having the same problems. does anyone have practical solutions. i really appreciate the help.
 

Drella

Well-Known Member
i felt pretty confident with the dyes, because it wasn't all the way blue, and definitely not yellow. i' thinking it might be the soil. some have told me to flush the soil before use, even fox farm. "they claim the soil is neutral, but you never know" could this be a possibility for the nute burnt. the burn only showed up two days after planting the clones in soil, no nutes added
 

huskerguy

Active Member
I use FFOF and botanicare pure blend pro nutes and i ran into the same problem my first go round.

FFOF is very "hot" with nutes right out of the bag, when i bought it the first time the @ the local growshop the dude told me to wait a good month before using any kind of nutrient and he wasnt kidding.
I thought for sure it was ph or something else that was causing the problems but it wasnt, it was me being a little ancy and jumping the gun on the feeding. ocean forest does an incredible job of holding a good ph for your plants.

Ive also found that the botanicare pbp nute line is a little strong so always feed less then you think and ease the plants into it.
I would honestly say that you can use FFOF soil with no veg nutes at all and start feeding when you switch to flower, as long as you dont veg for longer than 6 weeks. thats what ive done with great success. just my 2 cents bro
 

reefacheefa

Active Member
what do you guys use for testing ph. it was just hard for me to tell what was 6.5. 7 is blue 6 is yellow. the color i sided with was a yellowy blue. but some could say it was blue. frustrating. that's why i got the digital ph meter, but people say they have calibration problems. is anyone having the same problems. does anyone have practical solutions. i really appreciate the help.
lol... yellow n blue would be green bro
 

stumps

Well-Known Member
lol matching color can be a real pain. shoot for the 6.5 It doesn't have to be dead on just close. I shoot for 5.5 on mine and would say. I get close. I try for hitting low sometimes and let it get up to 7 other times. Another thought. Most all the leaf that starts on a clone will die off fairly soon after it roots and starts growing.
 

tea tree

Well-Known Member
that looks like nitorgen definciency due to ph imbalance. It looks to high. With your tapwater being ph baisc about 8 your foxfarm does not have enough lime to buffer it to 6.8. Chek your water ph and then your runoff. Adjust accordingly. It is an easy fast fix. Should see some results in a few days. Foxfarm has enough nutes for a long time and I noticed initial stunting when seedlings started but noithing serious and worked it out in a few weeks most.
 
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