a smattering of leaf issues

So I'm about 4 weeks into flower and have dealt with n toxicity (switched to Lucas formula GH to resolve) and what appears to be a cal/mag issue. I am also dealing with the potential rot of existing roots from another plant that had been in the same block but has been cut.

I currently have fan leaf stems turning red as well as rusty spots on some leaf edges.

GH Lucas + cal/mag and a pinch of Epsom salt in 4 gal distilled and tap water.

I keep my Ppm around 800 to 1000, and keep my PH between 5.5 - 6.

Root temps stay around 70-72f

Room temps 75-80f

RH ~60%

Any insight for the following pictures?

are you sure you want as low as 5.5? seems too low. how about 5.8 to 6.5 and see how that works.

polishpollack said:

are you sure you want as low as 5.5? seems too low. how about 5.8 to 6.5 and see how that works.

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I let it fluctuate and aim for upper 5's, though it has been dropping rather than rising in the last week

them plants are in a world of hurt
i had my plants do that a while back like 4 runs ago but i couldn't find the answer so i flowered then and all the new stretching growth grow find nice green stems perky leaves so that made me think is was a phosphorus or potassium problem.
n toxicity is still present my the looks them plants will take 3 weeks to recover just my guesses

the only reason I can think of why pH drops when you expect to go up would be if the plant is taking up a lot of water or the water experiences a lot of evaporation from the container. but I'm not a chemist so I really don't know this thing happens.

Is " smattering" a word?

polishpollack said:

the only reason I can think of why pH drops when you expect to go up would be if the plant is taking up a lot of water or the water experiences a lot of evaporation from the container. but I'm not a chemist so I really don't know this thing happens.

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Low rh and ppms to high

60rh the grower says.

projectinfo said:

Low rh and ppms to high

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So take out the dehumidifier and let the rh rise, thereby reducing the amount of perspiration and keeping the water more stable in the bucket?

And at my measure this morning my Ppm was 870

projectinfo said:

Is " smattering" a word?

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Yes, using the secondary definition here

Kipn said:

them plants are in a world of hurt
i had my plants do that a while back like 4 runs ago but i couldn't find the answer so i flowered then and all the new stretching growth grow find nice green stems perky leaves so that made me think is was a phosphorus or potassium problem.
n toxicity is still present my the looks them plants will take 3 weeks to recover just my guesses

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I figured the clawing was residual n tox. Never using flora grow again lol

Kretzlord said:

I figured the clawing was residual n tox. Never using flora grow again lol

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what are you growing in just wondering im guessing dwc considering you said root temps

Dwc, Lucas formula with GH hydro. Plenty of air from the stone, no light penetration in the bucket

Kretzlord said:

Dwc, Lucas formula with GH hydro. Plenty of air from the stone, no light penetration in the bucket

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in no way am i saying this is the right thing to do but i recently had allitle n toxicity so all i did was emptied my rez filled it with clean ph water and let the plants chill in that for 3 days to crap out all the un wanted chemicals then emptied and re filled with around 450ppm and kept ph in range and plans are growing fine
personally i say fuk distilled water just use tap unless its really hard water if its hard id say do what everyone else does and get a RO filter
my tap water is 250ppm ish i see not allot of problems using that but ive only been trying dwc for a few months so im just saying what ive experienced so far
i do know 800 to 1000ppm is way too high

I'd just get the ppm down and see if that helps. 60 rh with dehumidifier sounds pretty good. maybe the plants are taking on less nutrients as they get on to the end of their life cycle.

Kipn said:

in no way am i saying this is the right thing to do but i recently had allitle n toxicity so all i did was emptied my rez filled it with clean ph water and let the plants chill in that for 3 days to crap out all the un wanted chemicals then emptied and re filled with around 450ppm and kept ph in range and plans are growing fine
personally i say fuk distilled water just use tap unless its really hard water if its hard id say do what everyone else does and get a RO filter
my tap water is 250ppm ish i see not allot of problems using that but ive only been trying dwc for a few months so im just saying what ive experienced so far
i do know 800 to 1000ppm is way too high

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I'll try a flush, and I need to get an ro system but it's not in the budget at the moment (Any suggestions on a model I should look at?)
Looks like I need to fill a cooler with my dumb tap water and let it sit out for a day and then flush.

Thanks everyone for the suggestions!

And my tap is around 250 ppm btw

Kretzlord said:

I'll try a flush, and I need to get an ro system but it's not in the budget at the moment (Any suggestions on a model I should look at?)
Looks like I need to fill a cooler with my dumb tap water and let it sit out for a day and then flush.

Thanks everyone for the suggestions!

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i wouldn't wasn't my money on a RO filter because im cheap so i have no idea on models haha

The effected areas mainly seem to be the edges. Are you sure this isn't a potassium issue?

Medicated Bonsai said:

The effected areas mainly seem to be the edges. Are you sure this isn't a potassium issue?

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I'm sure of nothing lol. The color and spots made me think calcium. Would my PH range cause a K lockout?