flowering plant having problems

she is 3 weeks into flower and is getting weird marks on some leafs,she is in ffof soil and is in a 3 gallon pot,the only nute its gotten during flower is jamaican bat guano,it stays outside and brought inside for dark time,im positive its not bugs,i dont have no ph equipment so ive been buying gallons of water that was reversed ozmosis.if anyone has some input it would be great

I'm no expert but I prefer to water with tap water over purified/RO water. There's lots of minerals and alkalines in hard water that are beneficial to the plant, and RO water can be very acidic.

should i put a couple gallons of tap water
in her

It wouldn't hurt anything I like to let the water sit overnight to decalcify but its not required. Judging by this chart I would say the yellowing is a potassium or magnesium deficiency. If guano is all you've fed her this would explain it.

it sucks not having ph equipment,kinda shooting the dark ya know.....lol

They're looking good but be careful using RO (I do and i| had a nightmare buffering). It is PH 6.8 which is good for soil but it is too soft and needs Ca/Mg added to buffer the water before nutes. If u don't u'll get Ca/Mg def. The PH must be in a range for the nutes to be absorbed. PH 6.5-7.0 is good. U should buy a cal/mag integrated product ( I bought separate bottles which is why I had problems). Or use tap water half mixed with RO or just use tap and get ready for a MG def.

could add tablespoon of epsom salt gal of water to help wth the mg

i used some molasses but im guessing it wasn't enough

anybody else have any input

In flowering the plant uses less nitrogen and more phosphorous, and if you supplement phosphorous during flowering, the leaves can start turning from green to a shade of yellow. Within reason of course, if you maintain a decent balance I wouldn't worry too much and just see her through.

Also, could consider dissolving a basic vitamin pill in warm water, then including that in your next watering. And I'm not joking either.

RollupRick said:

In flowering the plant uses less nitrogen and more phosphorous, and if you supplement phosphorous during flowering, the leaves can start turning from green to a shade of yellow. Within reason of course, if you maintain a decent balance I wouldn't worry too much and just see her through.

Also, could consider dissolving a basic vitamin pill in warm water, then including that in your next watering. And I'm not joking either.

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do you mean a multi vitamin? never heard this one before intresting

Yes mate, purely for the macronutrients within like zinc, mag, etc, I read that idea a while back and my plants at worst didn't do anything, at best appreciated it. It's small amounts, and in water, or not concentrated, it adds those minerals to the soil. Done it before in soil and will do it again. Have a thinkie about it.

I sometimes pop one in when I'm brewing a nutrient tea, small and mild so no real chance of over nuting. I'm partial to gentle rather than packing in strong nutes etc.

yeah i never heard of that before

bigjim6943611 said:

it sucks not having ph equipment,kinda shooting the dark ya know.....lol

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invest .. it saves sooo much stress.. i was hardheaded for the longest then i said fukk it and spent 50 bucks and got what i needed insted of gettn an 8th of that oooooweee

so what do you guys think cal/mag is the problem

gonna try some Epsom salt tonight and see if it help,how should i mix it up and how do i apply it to the plant

bump
bump
bump

get the color change liquid...it is easy to use, and you don't have to calibrate it...
I mean you won't be telling people your ph is 6.8 but you will know it is between 6 and 7...it is all I have every used and it works great...no reason to spend more on it.

ill post some more pics later this afternoon,i used epsom and they look a lil better,i was also wondering does it need any nitrogen its like 4 weeks old today in flowering

id stick with R/O.

its s combo of nitro burn potassium def. and calcium def. you need EXTRA cal with Ro systems. ive had to use tripple the amount of my cal-mag myself with Ro systems to keep a bare minimum requirement for my plants. ive use up 3/4 of my cal-mag and im only three weeks into flowering/budding.

read and double read nutes. start of budding you need alot on the X-X-potatisium side when you look at the nute levels.