Green leaf with yellowing out surface and black tips

the plants are vegging at six weeks
afghani indica
they are yellowing with black tips
especially my clones that are one week old cuttings

i think they have been over heated but i moved them and they haven't seen heat stress for about a week
i moved my clones away from my old hot veg room and into my new one but they don't seem to be shaping up
but the clones only recently (last two days) have become yellow

My plants are in different size containers ranging from 1 to 3 gallon
I'm using fox farm soil
using bat guano high in nitrogen in their water

clones are in fox farm soil in half gallon containers
fed nothing but water but i gave them a tiny bit of bat guano last night


any advice? Thanks in advance for any help.

Just took reading of veg room.
72 Degrees F 52% humidity

humidity dome
73 degrees 80% humidity

Thought I saw some N def and then some Mag def...

Probably a ph thing...

Mag deficiency mostly. the veins stay green and the rest of the leaf turns yellow or even brown in the old, lower leaves. new leaves and maybe old leaves leaf edges are even curling up a bit. it just seems like everything even needs a boost except nitrogen. maybe too much nitrogen even.

uhavealighter? said:

Mag deficiency mostly. the veins stay green and the rest of the leaf turns yellow or even brown in the old, lower leaves. new leaves and maybe old leaves leaf edges are even curling up a bit. it just seems like everything even needs a boost except nitrogen. maybe too much nitrogen even.

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Would it be wise to get an all purpose fert ? My bat guano is only high in nitrogen or only high in phos

uhavealighter? said:

Mag deficiency mostly. the veins stay green and the rest of the leaf turns yellow or even brown in the old, lower leaves. new leaves and maybe old leaves leaf edges are even curling up a bit. it just seems like everything even needs a boost except nitrogen. maybe too much nitrogen even.

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yea what he said ^ remember too much nitrogen can lock out potassium and give the tips that burnt look. def. check your ph. mag gets locked out at like 6.4 or less. 6.8 is where you wanna be at for maximum nutrient uptake. (i could be off by a point one way or the other)

so if i lowered my n ill be okay? I already flushed about 3 weeks ago

it might help with the burnt tips but the burnt ones are gonna stay burnt. i would focus more on the mag def. check the ph to make sure its in the right range. the flush coulda drained a lot of nutrients and elements out. why did you flush them?

HottFuzz said:

it might help with the burnt tips but the burnt ones are gonna stay burnt. i would focus more on the mag def. check the ph to make sure its in the right range. the flush coulda drained a lot of nutrients and elements out. why did you flush them?

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I was told flushing plants is healthy on a monthly basis. It seems fine excePt for my clones and one plant.