Yellowing leaves at 4 weeks flower

[Lucid]

i been getting some yellow leave poping up all over the place allof a sudden at 4 weeks of flower... its mainly top most fan leaves.... and all my babies in general are turning much lighter green to the point of concern ....


1000wHPS... 5 Gal Container .... Fox Farm Nuts at half strength .. been feeding and wating with a ph of 6.4-6.5

 

[sproutco]

Too high a ph. Aim for 5.6 to 6.2 in soilless potting soil and in your fertilizer water. (Soilless = peatmoss, pinebark, perlite, or vermiculite)

 

[Lucid]

im in promix HP.......

ok ... should i gradualy drop the ph or should i hit them with a 5.6 water next time to pull her down ?

 

[sproutco]

Aim for 5.8 at every watering/fertilization. While promix has dolomite lime added to supply calcium and magnesium, it does not have gypsum to supply sulfur. You should have sulfur in your fert. that contains n p k plus the micronutrients iron, zinc, copper, manganese, boron, and molybdenum. You can add sulfur if not in your liquid fertilizer already by adding 1/4 teaspoon powdered gypsum + 1/4 teaspoon magnesium sulfate/epsom salts per gallon of water every third or fourth fertilization with your regular fertilizer. Often calcium and magnesium are low even with dolomite lime added to the soil so doing this would also supply these to boost up levels. So, you adjust the ph and make sure all the nutrients are supplied to the plants.

 

[Lucid]

i added 1 cup of dolomite lime per cubic foot of soil

ill double check my cubes of promix and see exactly whats in to and get back to you


GROW BIG (VEG FOOD)

Grow Big organic based concentrate is a comprehensive blend of major, minor and micro nutrients.
Formulated to promote spectacular balanced growth, instant green-up and color intensity of blossoms.

Grow Big is great for roses, tomatoes, vegetables, and lawns.

Derived from: Ammonium Sulfate, Ammonium Phosphate, Urea, Blood Meal, Potassium Nitrate, Potassium Sulfate, Earthworm Castings, Norwegian Kelp, iron EDTA, zinc EDTA, manganese EDTA, copper EDTA, chelating agent, Disodium Ethylenediamine Tetra Acetate (EDTA), sodium borate, and sodium molybdate.

NPK: 12-7-7


TIGER BLOOM (Flower food)

Fox Farm's Tiger Bloom is an ultra-potent, fast-acting, high phosphorus formula. It also contains nitrogen for growth and vigor and a full complement of micronutrients.
Tiger Bloom is formulated with a low pH to maintain stability in storage and keep micro nutrients available.

Using Fox Farms Tiger Bloom encourages abundant fruit, flower, and multiple bud set. Use it at the first signs of flowering, clear through harvest.

Tiger Bloom can be used for both hydroponic and soil applications.

NPK: 2 - 8 - 4


Big Blool (CATALYS)

Fox Farm's Big Bloom is a biologically active, water soluble plant food formulated to gives your plants strong, extra large, multiple blooms and sweeter fruit without synthetics.
The 100% natural and organic biologically active liquid formula of Big Bloom can be applied as a nutrient in drip irrigation and hyrdroponic systems, or as a foliar spray.

Big Bloom is safe to use in your hydroponics garden and can be used in combination with Grow Big to customize the nutritional requirements of your garden.

The gentle organic formula of Big Bloom will not burn tender young plants. It can be used indoor or out.

Derived from: earthworm castings, bat and seabird guano, rock phosphate, sulfate of potash magnesia (a natural mineral) and Norwegian kelp.

NPK: .01-0.3-0.7

 

[Lucid]

And Here are my Budding Additives


(early flower) + Open Sesame (5-45-19) to encourage early flowering and ripening.
(mid flower PK boost) + Beastie Bloomz (0-50-30) for maximum blossom development and heavy fruit.
(final boost b4 flush)+ Cha Ching (9-50-10) to improve taste and aroma.

sb bx3 (21 days)

^^^ taken a week ago ... now the plants went from super dark green to pail greeny yellowish more so ... in a weeks time

 

[Lucid]

heres the start of the bogbubble going yellow

 

[Guest]

How far along are they. I wouldn't go adding a bunch of stuff now, could make it worse.

Flush then continue you feeding regimine but add a little N to take care of that. Is it me or are the leaf veins a little purple looking. This usually indicates a N deff, can't really tell from the pics. Oh yea and I agree on the ph 5.8 to 6.2

They don't really look bad. BogBubble is usually a little liter green than most.

Good Luck Bro.

Mo,

 

[sproutco]

Promix already has lime in it. You should not have to add more. You'll end up overliming and have a high ph if you add more. You should not have to add any calcium and magnesium in your water with your fert. You do want n p k plus sulfur(ex:the fert has potassium sulfate) and the micro's.

 

[Lucid]

mr.mo they look way worse then that... i dont have an upto date pic ...
on the bogbubble ... all the bigger fan leaves are yellow .. only signs of green are on the leaves commming outta the buds and even thoes are yellow.

on all plants... the top bigger fan leaves were affected first.... and for the most part over all

 

[sproutco]

Get your ph to 5.8 in water/fert. I bet the yellowing will go away.

 

[Lucid]

ok .... i just fed today ...

at 900ppm at a ph of 5.8 ill keep u updated with status and ill add some pics when i get time this weekend
do you think thats a under feed at day 31
(my water is 150ppm outta the tap)

 

[Guest]

em, at the risk of sounding like im teaching you to suck eggs......are they getting enough air exchange, ive seen this loads on closet grows and usualy an upgraded air intake / extraction fan will rescue your ladies from yellowing and sort out the general health all over

 

[Lucid]

i have a 8inch vortex pulling a 8 inch carbonair scrubber with a 12 inch passive intake... and a 6inch can fan pulling 2x1000w hps

 

[MynameStitch]

do you have any more pictures of the damage on your plants?

it is dude to a few things, one your ph is to high and your plants are suffering from the start of a micronutrient deficiency.... not sure which one yet looks like possible slow iron

you have some extremeley heavy amount of bloom boosters i hope your not using those alot

any booster over the npk ratio of 20 is abusing your plant

50 and such sounds like a tree fert lol

you want something under 20

how much of each nutrient are you using right now and how often and how much?

your ph is off for soiless medium, like sprout says you need 5.3 to 6.3

 

[Lucid]

Mynamestich....... your exactly the person i want to talk to i have read many of your posts back in the good old days (OG days) ... im going take pictures tonight for you.... bare with me .... and i really appreciat you intrest in helping me ... and my girlfriend really likes your cute kitty cat you got posted there