Can anybody tell me whats wrong with my plants?
Plant one:
All the leafs are pale.
Plant two:
Mostly dark green but with yellow leafs on the bottom and defects on the top.


Plant three:
Yellow in the middle. Bottom leafs fell off.

Ive been watering them with water PH corrected with a little vinegar. About 3 gallons per plant every 3 days. And I give them ferts every 2 weeks at half the strength PH corrected with lime. The ferts are 7+7+7 for roses by a brand called Terra San. Everything I put in is PH corrected to 6.5-6.8 so unless my PH meter is busted they should have a nice PH. Could it be coz of too much N which they are not using since they are in flowering?
Please help and thanks in advance!