yellow tip

My purple lemonade auto is flowering and she’s starting to get yellow tips on new growth . I’ve adjusted my light higher . No nutrients, just FFOF soil . Any help is appreciated. Mahalo

Hi guys. After some advice I have recently germinated my first ever seeds there currently popping out the shells with their first leaves my problem is a couple of them have yellow tips. I have only fed them PH water so far however when mixing I did overdo it with the ph down and went down to...

My clones are roughly 10 to 11 days old. I've done nothing but miss them. They were bright green up until this morning now they're getting serious yellowing on the tips of their fan leaves. Any guesses on what happened? as of yesterday still no signs of rooting. I have them under little plastic...