First Grow Slight problems...

Ok well i have 2 auto flowering plants ( 1 haze and 1 Roadrunner) They are about 25 days old and 9 inches tall. About 2-3 days ago the leaves started to devolope yellow/lightbrown patches and go crispy. And now it seems to be spreading getting worse the leaves also seem very thin and light green. They also seem to be having trouble supporting their fan leaves and they are drooping downwards which is putting stress on the stem. I'll have pictures up in a few days but for now here's my set up, any help would be appreciated i don't want to lose them.

Temps : 73F
Humidity: 55 RH
Light Cycle 20/4
PH is around 6
Distilled water


Grow Tent DR100
Biobizz all mix soil + Perlite
Lights - 250wat CFL
1 Extrator Fan

maybe someone can help u with out pics but please hurry and get them pics up so we can try to help u save your babies
are you giving them nutes

The soil has some orgnanic nutes in it. And i haven't started nutes properly yet, but i did give it one shot of nutes (biobizz grow) but ive since watered without that.

I also haven't tested the water run off yet, but i always ph my distilled water untill its a light green color *which i think is 6*.

I'll get some pics by saturday.

It is tough to say without pics, but sounds like it might be Mag Def. It could also be nute lock-out, but if you ph is at around 6, most likely not the case. I would flush ASAP and carefully re-mix your nutes. Make sure to check the ph after mixing the nutrients. If you are adjusting your ph before adding nutes, this could be the problem. Many times the nutrients will drop your ph dramatically.

Alright well i think i probably have a nute lock out due to my soil being to acidic, im using organic soil so this could be causing my ph to get like that.

I will invest in some dolomite lime a digital PH meter, some molasses and Epsom salts. Will this work?

Can anyone tell what this is?

Zootime said:

Ok well i have 2 auto flowering plants ( 1 haze and 1 Roadrunner) They are about 25 days old and 9 inches tall. About 2-3 days ago the leaves started to devolope yellow/lightbrown patches and go crispy. And now it seems to be spreading getting worse the leaves also seem very thin and light green. They also seem to be having trouble supporting their fan leaves and they are drooping downwards which is putting stress on the stem. I'll have pictures up in a few days but for now here's my set up, any help would be appreciated i don't want to lose them.

Temps : 73F
Humidity: 55 RH
Light Cycle 20/4
PH is around 6
Distilled water


Grow Tent DR100
Biobizz all mix soil + Perlite
Lights - 250wat CFL
1 Extrator Fan

Click to expand...

I'm not familiar with that particular soil but I've used a variety of pre-nuted organic soils and I find that they start to "run out" around 3-4 weeks. It sounds like you are about there. Have you started giving it nutes? If not, then before you start with the dolomite lime and epsom salts you might want to feed it first. Also, you may want to consider a transplant if they are in pots that are smaller than 1 gallon. Have you given any nutes and if so what are you feeding them? I see that you are using distilled water. You may want to consider a cal/mag supplement as well.