Weird browning have I over done it?

Hi guys 2 days from end of week 4 this issue has just started last couple of days but is moving fast. Gorilla skittles & bubba Kush in soil under 2 600w hps & a small led have been light on feeds getting it roughly every 6 days & water on 3rd day in bewteen however they are decent size & have not had burnt tips so leaning towards they may be hungry. run these strains last round with no issues at all however they were quite a bit smaller

Have just given them a good water last couple of days if no improvement will give them a good feed

Everything looks so green and lucious…are you sure its not an ”odd” problem like air circulation or humidity/moisture within dense parts of the canopy?

Edit : And if it’s a nutrient issue, could it be tied to nitrogen toxicity since the leafs look so green/dark? I just have alot to learn but, I’m just throwing some guesses out there. Good Luck!

They don’t look deficient at all. Where’s all the damage on the plants? Near the tops?

Getting some damage on the newer leafs mid plant same with bigger leafs. Mid to lower plant the browning on them leafs has just started showing up. A few om them seem to be browning/dying from tips will get more pics this evening. Just cover all basis before anyrhing esclates. I have just backed of nutes if they dont like that will give them a good feed

Took these of an hour ago. Mainly mid & top plant is occurring on some new growth & old aswell as the odd bottom 1

Cant say with zero info but i can guess thats ph related

Have backed right of the nutes now on day 38 they seem to be going ik defiently frosting up & putting some weight on