NEED HELP...Plants very yellow

[curious101]

Well, my one plant in the top right corner of room is in week 5 of flowering...others are in week 2...having some real problems in the last week...plants yellowing and crisping on the ends of the leaf...first i thought the lamp was too close which was wrong...gave it a light dose biobizz biobloom, cal mag and liquid karma on sat...plants got worse...any ideas...think it may be ph b/c i had a low ph problem during my veg cycle and added some earthjuice up...did the same today hoping it helps...any other suggestions?

curious101 Reviewed by curious101 on 05-23-2007. NEED HELP...Plants very yellow Well, my one plant in the top right corner of room is in week 5 of flowering...others are in week 2...having some real problems in the last week...plants yellowing and crisping on the ends of the leaf...first i thought the lamp was too close which was wrong...gave it a light dose biobizz biobloom, cal mag and liquid karma on sat...plants got worse...any ideas...think it may be ph b/c i had a low ph problem during my veg cycle and added some earthjuice up...did the same today hoping it Rating: 5

[invision]

when in doubt just flush them.

when you flush make sure the water runs clear out the pots removing all the yellow from the soil, then add 1/4 of nutes and PH the water and pray she pulls out.

those plants look very behind for 5 weeks how long has this been?

[curious101]

no...three of the plants are 2 weeks into 12/12...the one in the first pic in the top right corner is on week 5...(i've included a close up below) can't seem to figure out what went wrong...buds are big on the plant on wk 5 but leaves are very yellow...others are just beginning to form buds at only 2wks of 12/12 and two of the three are also very pale yellow with drooping leaves and curled tips...check out the pics from above PLEEZ

[Weedhound]

Well are you checking your ph? if so what is it? If not....start because it sure could be your problem.....especially since you added more nutes and it got worse.

[Weedhound]

Here's a really good link to plant problems. Check it out and see if you can find the problem....has lots of pics and good info.

International Cannagraphic Magazine Forums - The Complete guide to Sick Plants,pH, and Pest troubles!

good luck.

[curious101]

now that link is even more complicating...cuz it looks like my week five has a nitrogen deficiency...the other two look like maybe nitrogen and zinc but i'm very unsure...better check the ph tomorrow...had a low ph problem previously that was very similar...adding ph up today with some superthrive at ph of 7.5...not sure if that was smart cuz i didn't check the ph...but like i said its almost exact to my problem that i had in vegging which was low ph...thanks

[Zandor]

its a toxic salt build up, the crips leafs is a give away.

Make sure you flush it well or you will have a lot of nutrient build up to smoke and that can ruin your flavor.

[curious101]

thanks zandor...i will flush them heavily tomorrow...should i then use 1/4 strength nutes as invision suggested?

[Zandor]

Do yourself and your plants a favor and use a commercial flusher.

You are so late in flower you may want to think of 1/2 strength and only feed every other water. It will take them time to perk up and you don't have that much time left. If you are going to use boosters make sure you cut back on other minerals or you will over feed the others too. Some strains can take it at the end but not all of them.

[Weedhound]

That is so cool....:thumbsup: