Bottom Leaves Dying/Drying Up - Hydro HELP!

[prochobo]

What type of medium; hydro?
Indoors or outdoors? indoor
What strain? White Widow & Skunk #1
How old are the plants? ~8 weeks
What type of lights and how many watts? 12x 26w CFLS
How far from the lights? 2" from top
What is your watering frequency and source of water? Emptying buckets/refilling every week
What, how much and when was it fed? NPK? Lucas formula, ~900ppm
What is the medium/runoff pH and PPM if in hydro? ~5-6ph (only have a liquid tester), 900ppm
What are the temps and humidity in the room? 75F, no idea on humidity
What size pots? 5 Gal buckets
Any bugs? Look real close. Had some spider mites, think its under control now
Any other pertinent info? Dunno what else to say

Problem has been persistent for about a month. I'm following the Lucas Formula to the dot and keeping my PH in check, at least I think. I'm not really sure as to what to add to cure this deficiency. I think it could be a phosphorus deficiency according the the pictures I've seen.

[TBuds]

Looks like a Mag deficiency,pic #4 is a good illustration of a mag def leaf. Mag gets locked out in hydro with a PH between 2.0-5.7 Just a thought Good Luck

[77401]

That is a bushy plant!!!
Maybe its just not getting any light down under there.
How does the new growth look? What speed are you getting new leaves?
Place some more CFL's on the sides or under the plant

[prochobo]

Originally Posted by TBuds

Looks like a Mag deficiency,pic #4 is a good illustration of a mag def leaf. Mag gets locked out in hydro with a PH between 2.0-5.7 Just a thought Good Luck

I see. Well, if that's true, then out goes the recommendation of keeping PH at around 5.5 for hydro.

On another note, before my last reservoir flush, I had my PH at 6.x (can't tell exact due to liquid tester) and the plants seemed to do alright, but I still got the same dying leaves.

Originally Posted by 77401

That is a bushy plant!!!
Maybe its just not getting any light down under there.
How does the new growth look? What speed are you getting new leaves?
Place some more CFL's on the sides or under the plant

There aren't any side lights, but my buddies plants right next to mine have no problems, so I doubt it's the lights. 2-3 weeks ago, the growth was pretty good. They got bushy, but not necessarily taller. Now, it seems like they've slowed down a bit and aren't getting very much taller.

On another note, that chick Faye Reagan in your avatar is fucking hot.

[77401]

Originally Posted by prochobo

I had my PH at 6.x (can't tell exact due to liquid tester) and the plants seemed to do alright, but I still got the same dying leaves.


On another note, that chick Faye Reagan in your avatar is fucking hot.

You like Faye? Me too, I'm so into the redhead thing right now.

I started with the drops & color chart. What a pain in the ass it was.
Here is a cheap tester

Amazon.com: HM Digital Pocket Size TDS Meter...
Amazon.com: HM Digital Pocket Size TDS Meter...

[5starfarmer]

I'd go with the nute lockout, DWC likes 5.7-6.2/.3 imo. Also, with a plant that bushy, how's the root zone looking? Airstones( if that's what ur using) clogged, wrapped in roots? sometimes you get dying off leaves from too little oxygen in the water.