Help diagnosing my plants please

[Taco740]

Hello everyone at RIU, so I'm in to my 4th week of flowering and I getting yellow spots on my leads, the leaves begin to turn yellow fully, and start to turn brown and die off. Can anyone help me with my plants?

I have both my plants in
- 5 gallon buckets
- Just Natural Organic soil (from walmart)
- 4x4x6 grow tent
- 400w HPS grow light
- Temps are 82 degrees during the day and 74 degrees during the night
- I'm feeding my plants Floranova Bloom and CALiMAGic at 1000 PPMs and 6.4 PH evey other feeding
- I water my plants 2-3 times a week and I always wait till the soil gets dry before I water.

Can anyone help me out with my problem? Any and all help and info would be greatly appreciated. Thanks.

 

[Bugeye]

Your temps are a little high and your soil is questionable. Your nute ph don't mean spit if your soil ph is not also good. I'd check that soil ph because that is good to know.

 

[Terpenedave]

Looks like nute burn. If your watering multiple times a week that's too much. You should only need to water twice weekly tops. I water about every 5-6 days.

 

[Bugeye]

Looks like nute burn. If your watering multiple times a week that's too much. You should only need to water twice weekly tops. I water about every 5-6 days.

I water everyday, plants love it.

 

[Terpenedave]

I water everyday, plants love it.

It all depends on what type of medium your using and the container size.

For his particular set up. He should be watering way less.

Here are some accurate tips to refer to.
https://www.leafly.com/news/cannabis-101/tips-watering-cannabis-plants-effectively

 

[Bugeye]

It all depends on what type of medium your using and the container size.

For his particular set up. He should be watering way less.

Here are some accurate tips to refer to.
https://www.leafly.com/news/cannabis-101/tips-watering-cannabis-plants-effectively

Exactly, you water when they need it. Running higher temps will increase water needs. How the soil is structured can be a huge factor. You may have too much clay in your soil.

 

[im4satori]

how many mls per gallon are you adding of the floranova and calmag ?

 

[Taco740]

Your temps are a little high and your soil is questionable. Your nute ph don't mean spit if your soil ph is not also good. I'd check that soil ph because that is good to know.

My soil PH is 7. I checked my runoff and it was at 5.45. Is that bad? If so how do I fix it?

 

[Terpenedave]

Regardless if he is watering that often because they actually do need it. I think it's highly likely that supplementing every other time might very well be a little too much.

 

[Taco740]

Looks like nute burn. If your watering multiple times a week that's too much. You should only need to water twice weekly tops. I water about every 5-6 days.

I usually water twice a week but lately my temps have been a little high and the soil has been drying out faster so sometime I have to water 3 times a week. But I will try twice tops and see how that works out.

 

[Terpenedave]

My soil PH is 7. I checked my runoff and it was at 5.45. Is that bad? If so how do I fix it?

Exactly, sounds like too much left over supplement draining off

 

[Taco740]

Exactly, you water when they need it. Running higher temps will increase water needs. How the soil is structured can be a huge factor. You may have too much clay in your soil.

I don't know that there is any clay in my soil

 

[Taco740]

how many mls per gallon are you adding of the floranova and calmag ?

I'm adding 1 tsp per gal of cal mag and 2 tsp per gal bloom

 

[growin-Jables]

If your run off ph is 5.45 then it sounds like your ph is pretty low. Is just started ph up the water before feeding. What's your ph of water when you feed?

 

[Taco740]

Exactly, sounds like too much left over supplement draining off

So cut down on my nutes? What Ppms should my bloom nutes be at?

 

[Taco740]

If your run off ph is 5.45 then it sounds like your ph is pretty low. Is just started ph up the water before feeding. What's your ph of water when you feed?

The PH of my water when I feed is 6.4

 

[im4satori]

floranova bloom during flower range would be 7 to 9 mls per gallon
you shouldn't need calmag at all whats so ever


during veg full strength per gallon
floranova grow
6mls per gallon
3mls calmag
1/8 tsp Epsom salt

you got great fertilizer not sure why you cut corners on the soil

you shouldn't fertilize every time
you should;

water only...water only....fertilize.....repeat (fertilize every third)

if they still look hungry fertilize more frequently, for example;

water only..... fertilize.... water only....fertilize (fertilize every other)

make sure when you fertilize/water your getting 20+% run off
so if you water in 1 gallon you should get 3to 4 cups from the bottom of the pot

during veg you shouldn't need to fertilize often when using a quality soil maybe only a couple times max provided you up-pot properly

consider buying foxfarm ocean forest next grow

 

[growin-Jables]

The PH of my water when I feed is 6.4

So if your runoff is getting pulled down to 5.5. There your probably sitting somewhere near 4.0 in the soil . I'm not super knowledgeable when it comes to figuring at ph exactly. But i would try finding some info somewhere on ways to raise ph in soil. I know thete are top dressings for your soil that can help.

 

[im4satori]

I'm adding 1 tsp per gal of cal mag and 2 tsp per gal bloom

too much

even at 9mls per gallon that's a high amount

if your not getting the run off from the bottom of the pot itll be worse

plus if your feeding fertilizer frequently it all adds up

give them a flush with plain water

then start back your feeds at 50% and slowly raise them

 

[Taco740]

This is my first grow and I grabbed the first soil I could find other than miracle grow. There are no grow shops near by so I'm gonna have to order some soil. I was thinking roots organic?