Same thing I keep seeing

[BigB6]

Problem: Discoloration on leaves

Medium/grow method: autopot 15lt biobizz light mix 60%, 40%perlite roughly

Feed: and supplements used: biotabs, startrex, silicium flash, mycrotex, bactrex.

water source: Tap, 6.2ph

Strain/age: Dinafem blue cheese auto, 4 weeks old

light used: Lumatek attis 300w

Climate: Temperature 27oc, humidity usually around 50%

Additional info: This problem I've seen on a few of my grows. If I could just figure this out I'd have perfect grows. They seem to be fine otherwise but yield could be improved if I sort out this issue

 

[Couch_Lock]

Not sure exactly what the issue is, but it does look like salt buildup from nutes......After u apply nutes (half strength at first to see how each strain reacts), ALWAYS water with ph'd water the next time plant needs moisture! And use a LOT, till it runs thru the pot and ur drip tray begins to catch fluids.

I have a few small brown spots on random leaves but not entire leaves discolored.......unless they are yellow and drop off on their own (near chop time).

 

[Towlie]

I have this same problem my plants veg perfectly soon as they go into pre flower this problem happens not sure what the cause is but if its not sorted properly it will mess up your full plant

 

[BigB6]

Its autopot

Not sure exactly what the issue is, but it does look like salt buildup from nutes......After u apply nutes (half strength at first to see how each strain reacts), ALWAYS water with ph'd water the next time plant needs moisture! And use a LOT, till it runs thru the pot and ur drip tray begins to catch fluids.

I have a few small brown spots on random leaves but not entire leaves discolored.......unless they are yellow and drop off on their own (near chop time).

It's autopot water only method. I feed no nutes man

 

[Towlie]

Its autopot

It's autopot water only method. I feed no nutes man

I've been reading a lot online lately and I've narrowed it down to 2 possible things well for my grow in soil anyway

could be pH lock out so I've invested in a blue labs pH meter

Or could be potassium or phosphorus deficiency if it starts at the tips and looks like nute burn but your not feeding nutes it's the plant eating it's self similar symptoms as nute burn

 

[Proph]

Not sure exactly what the issue is, but it does look like salt buildup from nutes......After u apply nutes (half strength at first to see how each strain reacts), ALWAYS water with ph'd water the next time plant needs moisture! And use a LOT, till it runs thru the pot and ur drip tray begins to catch fluids.

I have a few small brown spots on random leaves but not entire leaves discolored.......unless they are yellow and drop off on their own (near chop time).

He's using bio tabs... It's a time released npk product that is placed in the soil prior to planting.

 

[Couch_Lock]

Guess I fail @ Reading Comprehension.

Maybe he can get accurate answers in the Biotabs forum.

 

[DCLXVI]

If you have a ppm/ec meter, check your tap water. It might be a lot higher than you expect. I cut mine with distilled water to bring the ppm down a lot. I was able to get a water report and mine is high in Ca and it's suspected that the BB light mix soil carries a bit as well. Easy to overdo if your water is high in "something."

That's all I could suggest if a problem reoccurs. What is staying the same. Look there.

 

[BigB6]

If you have a ppm/ec meter, check your tap water. It might be a lot higher than you expect. I cut mine with distilled water to bring the ppm down a lot. I was able to get a water report and mine is high in Ca and it's suspected that the BB light mix soil carries a bit as well. Easy to overdo if your water is high in "something."

That's all I could suggest if a problem reoccurs. What is staying the same. Look there.

Great idea, I have a blue labs ec pen. Finding the feckn thing is another story

 

[BigB6]

If you have a ppm/ec meter, check your tap water. It might be a lot higher than you expect. I cut mine with distilled water to bring the ppm down a lot. I was able to get a water report and mine is high in Ca and it's suspected that the BB light mix soil carries a bit as well. Easy to overdo if your water is high in "something."

That's all I could suggest if a problem reoccurs. What is staying the same. Look there.

I've been using the water that comes from the shower. It allows me to get the temperature right. Where I live you can drink the tap water, the water that goes to the tap is the same that goes to the attic tank that serves the shower. They say you shouldn't drink that water as it's stagnant. But I thought it shouldn't matter much.