destructive issues

Strain_mango.
8 weeks flowering.
Soil_FF ocean forest.
Lighting_Cfl
Nutes_fox farm tiger and big bloom and molasses.
Soil runoff no nutes ph between 6.8-7.2
Water ph before runoff no nutes between 7.2-7.6
Issues only affecting 1 out of 3 plants.
Rate of damage is rapid,new damage daily.
New growth affected same as old growth.
Water every 2 days as needed.
Leaves bent down.
Small rust spot on leaves spreading.
Several grows under belt never seen this color spots or rapid spread of issue that only affects 1 plant.
:(

I wouldn't worry about fan leaves after 8 weeks flowering. Most plants lose them after eight weeks.

We have some papaya going now at just about 6 weeks. Mango and papaya are the same. Ours are starting to look like that. Happens as they get close to 8 weeks in flower. The big leaf die off. It means it's near the end of the life cycle.

Where did you get your seeds ?

Ours are from nirvana. I don't see anything wrong. Your ph could of been just a bit lower but not bad.

I'll take some pic's if you like ?

I have not taken any pic's in awhile. So here's a few.

When was the last time they got a dose of calcium? (1 tsp molasses per gallon of properly ph'd water per week)

Ingoing water ph is a tad high as already mentioned, but not drastic. Would be nice to see an accurate runoff ph. The buffers in the soil don't last forever. Might be that it's losing it's ability to buffer properly. (soil ph drops as the buffers fade..especially with peat-based mediums)

Do nothing drastic nor heavy-handed. They're too deep into flowering to be messing with 'em too much. Nothing but straight, properly ph'd water for a week before harvest.

If they have been in 8 weeks I would be looking at the trichomes real close.
Should be flushing now. Mine are done between 8 weeks and 9. That's hydro but the tric's don't lie.

Ok thanks for the help. I will start flushing this week,i was hoping to let them go 10-12 weeks as they are starting to fill in nicely. I got the original seeds from bcseeds years ago, don't think they are still in business. I seeded a girl i grew last year for the current seeds. I like this strain alot due to the large buds and low odor. Guess its time to track down my microscope.Thanks again for the help.

Quote:

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Originally Posted by Rusty Trichome

When was the last time they got a dose of calcium? (1 tsp molasses per gallon of properly ph'd water per week)

Ingoing water ph is a tad high as already mentioned, but not drastic. Would be nice to see an accurate runoff ph. The buffers in the soil don't last forever. Might be that it's losing it's ability to buffer properly. (soil ph drops as the buffers fade..especially with peat-based mediums)

Do nothing drastic nor heavy-handed. They're too deep into flowering to be messing with 'em too much. Nothing but straight, properly ph'd water for a week before harvest.

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Think im overdosing them with molasses ive been giving them a tbls per gallon twice a week. I also give them metanaturals calcium at 1/4 strength once a week.In the past this has been fine,this plant may not like the amounts this time around.