Hello all,

I am a first timer poster, and first time grower , 5 weeks in I thought my plant was going well, but now it looks as if some of the leaves are 'puffing up' in between the veins, and the leaf tips are curling under. New growth appears to be OK, although leaves are twisting a little.

Grow Info:

Indoor
Soil mix - multipurpose compost with perlite
Fertilizer has an NPK of 4-4.5-8
Soil Ph is 5.5 - 6
Tap water with Ph of 6.8
Watering schedule is maybe once every two days if needed, with a 1/4 strength fert
2 x 20W CFL's 5" from plant
Soil temps are 68F, air temp is around 74F
I have no way of measuring humidity yet.
Lighting is on an 18/6 cycle
Ventilation is provided via an open door in the grow room and a standard oscilating fan!

From the research I have done it looks as if my plant is either suffering from heat stress, salt build up or lack of water. I can pretty much rule out the water aspect, and the heat due to temps, but how do I tell if its really a toxic salt build up? Also I think my soil PH is a little acidic for soil, but my local garden centers dont stock dolomite lime.....are there any other alternatives..maybe homemade?

Thanks in advance for any help
sonicmook_uk Reviewed by sonicmook_uk on . Is my plant sick? Hello all, I am a first timer poster, and first time grower :D, 5 weeks in I thought my plant was going well, but now it looks as if some of the leaves are 'puffing up' in between the veins, and the leaf tips are curling under. New growth appears to be OK, although leaves are twisting a little. Grow Info: Indoor Soil mix - multipurpose compost with perlite Fertilizer has an NPK of 4-4.5-8 Soil Ph is 5.5 - 6 Rating: 5