leaves are brittle and brown. cut off or dont?

people on here told me it was nute lockout so i flushed them with ph'd water. the leaves are now curling and turning rusty brown. they are also brittle and flaking off with ease. should i cut the brown leaves off? also there is alot of small foilage under all my plants should i cut the small foilage also? im posting pics so just take a look please any help would be appriciated. keep in mind these are mother plants too

Twisting leaves usually is a sign of over fertilization. Your "taco" shaped leaves, with rust spots is usually a sign of a cal/mag deficiency. It appears you have multiple issues going on.

1. What's your medium?
2. What's your fertilizer?
3. What's your pH going in and out?
4. What are your supplements?
5. How close are your lights and what size bulbs?

SSHZ said:

Twisting leaves usually is a sign of over fertilization. Your "taco" shaped leaves, with rust spots is usually a sign of a cal/mag deficiency. It appears you have multiple issues going on.

1. What's your medium?
2. What's your fertilizer?
3. What's your pH going in and out?
4. What are your supplements?

Click to expand...

okay heres what i got..

1. pro mix bx and 5 gallon bags
2.foxfarm grow big, big bloom, tiger bloom. we have been giving them half strength nutes. so a tsp of grow big and 2 tbsp of big bloom every gallon. but they havent had nutes since the 11th and we flushed on the 17th. so no nutes for the last 10 days.
3. when we flushed we put 6.5 in and got 6.2 out
4. no supplements
5.17 inches for the canopy and 600 watt hps

It might be informative if you check on the condition of the roots. Are they a nice white color or a light tan? or are they a brown or blackish color?

there are holes at the bottom of the bag and the root thats exposed is tanish

i just need to fix this problem. i want to clone then throw one in flower