Problem 4 days into flowering

[cheapguy]

Leaves are turning yellow and the one plant looks sick
i just switched to 12 and 12 is it nitrogen deficiency
i have been giving DNF bloom for 4 days now but not gro base for veg should i keep giving gro base at the same time as bloom for a few weeks need advice please.... it's my first grow
i have some pics but there not that good

cheapguy Reviewed by cheapguy on 03-09-2008. Problem 4 days into flowering Leaves are turning yellow and the one plant looks sick i just switched to 12 and 12 is it nitrogen deficiency i have been giving DNF bloom for 4 days now but not gro base for veg should i keep giving gro base at the same time as bloom for a few weeks need advice please.... it's my first grow i have some pics but there not that good Rating: 5

[daihashi]

what kind of water do you use to give your plants?
When was the last time you flushed them?
What is the ph of the run off from your pots when you water them?

It looks like either an Iron or Sulfur deficiency possibly caused by ph.

Either that or magnesium, but looks more like Iron or sulfur due to the yellowing from the back of the leave forward.

I'm no expert but that's what it looks like to me. Hopefully someone with more expierence will chime in.

[cheapguy]

the ph is 5.8 going in have not checked water coming out using vericulite and perlite as a meduim have to over fill to get water check coming out going to raise ph a bit to see if it helps im thinking it's iron def now too anybody else have any idea's is there any additive i could use to solve this problem thanks for the response

[daihashi]

Thing is if you're in flowering then you're probably giving them a nute that has some potassium in it. This should be enough to fix an iron def. problem.

I believe your problem is ph based.

Take one of your pots. Drill 1 to 2 holes per side (use 4 sides North, east, south, west) into your pots. Take one of these pots and keep pouring water through it (without nutes but ph'd at what you normally use your water ph'd at) until you start to get run off.

Capture this run off. For example I capture mine in a measuring cup and use a pen PH meter once there is about 2-4oz in the cup.

I make sure to stir it up also to make sure to get an accurate reading.

I believe for a soiless medium you want to be between 5.8 and 6.2.

Again I'm no expert. May want to wait for a pro to come in before doing anything drastic.

[cheapguy]

thanks again im going to try that tonight

[cheapguy]

yup ph from the runoff was 7.6 so i checked my resivoir and it was 7.2 noob mistake i check few days a go and it was good at 6 stupid mistake but it's my first grow, frushed tonight i will give a good soakin
tomorrow with low ph water 5.8 and start over my yield has to be affected on this mistake oh well
thanks daihashi

[daihashi]

Awesome. I'm really glad you found your problem. Be sure to come back when harvest time comes and you have some nice pictures of some home grown nugs.

:thumbsup: :jointsmile:

[grey1223]

I'd stick with around 6.3 to 6.5, nothing will be lockedout at that level.

[daihashi]

I'd stick with around 6.3 to 6.5, nothing will be lockedout at that level.

He's running a soilless mix.

Soiless applications want a slightly lower ph than soil. Hydro is even lower than all the above.

[igotgreens123]

hey u go dude this should help u out... :rasta:

http://boards.cannabis.com/grow-faqs...nutrients.html