I need help please!

[Jesse Wisdom]

One of plants are curling up on edges humidity around 30-40% not hot in tent at all did have a heat issue week ago but was resolved within a day ... also one my other plant is getting crispy burnt tips and edges and they havenr grown in 2 days !!! pics below
ph always 6.5
Setup:
2x2x4 grow tent promix hp mychro soil floratrio nutes, calmag , ph up and down viparspectra 300w 20" above plants

 

[bad dragon bzzz]

soil looks wet,overwatering my first grow was is most peeps first booboo leaves resting on wet soil will go yucky.
good luck n keep er llit

 

[namvet25]

Plant looks just fine so could be some nutes got on them to make those brown marks.

 

[Jesse Wisdom]

Alright thanks yea little splash last week on one leaf but other sides getting affected and bigger leafs at top getting little tip

 

[AutoLowRyder]

humidity around 30-40% not hot in tent at all

you want your tent to be at 26-28c lights on, and 24-26c light off................... if your root matrix is quite cold, 19c or below, you will have nute uptake issues develop. Use a 1kw floor base electric thermostatic controlled fan heater, to warm the air lights off..................... you led will not heat the grow space to the required temp, for proper culture of these tropical strains................ if the soil has a pre nutrient added content, do not overfeed for the first 14 days. Ensure the pot dries right out to a light weight feel when lifted, once a week. This will ensure oxygen and co2 can get into the root to feed it........... maintain your grow temp lights off, and 26-28c lights off, your RH will control itself, as if linear to temp............ low temp = high RH.......... high RH 65% or above = carbon filter fail........ALR