Gasman5.0
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I water/ feed them today.Plants 1 and 2 feed @Do you have any idea what the PPM readings are for the outflow? When plants flower they react differently to nutrients, and sometimes high nute levels can create deficiencies later on in growth, since the reaction to make some compounds unavailable can take a while to develop. Too much Phosphorus and Calcium can create issues like this. If your outflow is high, I would cut back on the nutes a little. If the PPMs are low, then a smallish snack would be my recommendation. A little epsom salts should fix any magnesium deficiencies, which is sort of what it looks like is starting... but with a change of lights, that could also influence the leaf issues... especially if there is any UV included now.
It doesn't look like too much light, as I don't see any burning or cupping of the leaves, just the start of some discoloration. FWIW, some plants get yellow fan leaves during flowering. This can be caused by low Nitrogen, but sometimes the plants just do it. Things look pretty good other than the discoloration in the bigger fan leaves.
The Ph is kind of low for my preferences, but if things are doing Ok, then it might be best to leave them alone. I have used wood ashes mixed in with my waterings to slightly bump up the Ph, and it adds nutrients too, just doesn't contain nitrogen but plenty of P and K.I water/ feed them today.Plants 1 and 2 feed @
PH 7.01 for both, total 645ppm in plant 1: total 650ppm plant 2
Feed 3... 7.16Ph plain H2O 84ppm (last feed/water too runoff 3-1/2 days ago had 400ppm more in the runoff than I feed it with.)
Runoff from today’s watering.
1:144ppm/5.32Ph
2:124ppm/5.18Ph
3: 334ppm/ 6.09Ph
My ph runoff has hung in this range the whole grow and the plants look like they do now so..I haven’t added anything too raise the soil ph because the plants look like they are doing okay.
Good for tomatoes too!The Ph is kind of low for my preferences, but if things are doing Ok, then it might be best to leave them alone. I have used wood ashes mixed in with my waterings to slightly bump up the Ph, and it adds nutrients too, just doesn't contain nitrogen but plenty of P and K.
The Ph is kind of low for my preferences, but if things are doing Ok, then it might be best to leave them alone. I have used wood ashes mixed in with my waterings to slightly bump up the Ph, and it adds nutrients too, just doesn't contain nitrogen but plenty of P and K.
I water/ feed them today.Plants 1 and 2 feed @
PH 7.01 for both, total 645ppm in plant 1: total 650ppm plant 2
Feed 3... 7.16Ph plain H2O 84ppm (last feed/water too runoff 3-1/2 days ago had 400ppm more in the runoff than I feed it with.)
Runoff from today’s watering.
1:144ppm/5.32Ph
2:124ppm/5.18Ph
3: 334ppm/ 6.09Ph
My ph runoff has hung in this range the whole grow and the plants look like they do now so..I haven’t added anything too raise the soil ph because the plants look like they are doing okay.
I mix a tablespoon or two in a gallon of water. If you use ashes, make sure they are not from treated or household lumber... go out and build a camp fire if needed. FWIW, lye is made by pouring water thru wood ashes, so it will raise your Ph but not drastically. I usually mix a cup full into my 5 gallon buckets when prepping my growing medium.What amount of wood ash per/gal would you start with for easing the ph up into a friendlier zone given my low runoff ph values.
Yes it does. The slight yellowing seen has faded back towards green so I’m assuming the plant with yellow leafs which is my tallest plant and closest too the light source reacted too the new led light and has adjusted itself too it. I did move the light up from 16” too 18” which may have helped idk but they were looking really good before they went too bed last night.Does that light have a dimming capability
Thanks for info Jimster. I’m making my ashes today from some hickory and pecan I have. I’ll mix it in @ 1TBS/gal. and add it in next watering/feed.I mix a tablespoon or two in a gallon of water. If you use ashes, make sure they are not from treated or household lumber... go out and build a camp fire if needed. FWIW, lye is made by pouring water thru wood ashes, so it will raise your Ph but not drastically. I usually mix a cup full into my 5 gallon buckets when prepping my growing medium.
I always just use the local tap water... it has enouh but not too many minerals in it and is pretty low in chlorine content. On a side note, be careful when adding ashes and ground up lime as the lime can take a while to do it's work and can often overshoot your goal and keep progressing to alkaline conditions... but very slowly. Slow enough that you will be pulling your hair out trying to figure out why things are turning badly for no apparent reason. You will probably be fine with what you are doing, but just keep an eye on the outflow's Ph to make sure it doesn't creep up.https://www.pthorticulture.com/en/training-center/myth-series-water-ph-relates-to-medium-ph/
After reading the link above my water source may very be contributing too low phrunoff Ive always had. I’ve been using the same brand of filtered spring from the grocery store since I started this grow and it usual measures ph between 5.20~5.45 with 29~32ppm as bottled. I add any nutes and adjusted too 6.2~6.5 and go with it. Well after reading the Pro-max link I grab my water test kit and measured the Alkalinity of several bottles of the spring water and the Alkalinity was 10~20ppm and 10~15 ppm calicuim carbonate so this may explain why I’ve been recording very low ph valves in my runoff so I did a slurry test just now and I’m at ease with results..Water I used for the slurry test measured ph 6.97 and 0 ppm.
Slurry test values= 6.28ph 193ppm.
Runoff for this plant three days ago was 5.18ph 124ppm and the previous 4 runoff test were in the same range 5.18~5.30 and ppm as well.
I’m switching too tap water, it’s 74ppm and ph 6.94 out the faucet with a Alkalinity of 50ppm and 35ppm calcium carbonate. View attachment 997596
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