Day 45 Flower - How do they look ? First timer

Hey all - this is my first grow - the ladies are on day 45 of flower and was wondering what you guys think so far? I just want some constructive criticism ! The plants are 2 Candida CD-1 and 2 Barney's Farms G13Haze, all in 3 gallon fabric pots. In Roots Organics soil, being fed Roots organics dry amendments (Calmag (dolomitic lime, calictic lime, sulfur) seabird guano, worm castings, nitro bat guano), and roots organics dry nutrients line uprising grow, bloom, and foundation. Also using myco/trichoderma/beneficial bacteria- Watering every 3 days 1.6L spring water. The PH has been at 7-7.5 (slightly alkaline) for the past couple of weeks. Upon thinking back- I think the plants have been underfed (a note for next time). Anyway the Avg temp has been 76-79F with an average RH of 35-45%. NIght temps at 69-70F..This is an indoor grow, under 470 'true' LED watts. No pest/fungi/mite problem as of yet . bottom leaves are starting to drop fast.. Here are some pics-

<-rust brown spots??

This is marijuana plant problems. I think you are looking for your journal or anywhere else.

Also, lower your Ph.

swisha said:

This is marijuana plant problems. I think you are looking for your journal or anywhere else.

Also, lower your Ph.

Click to expand...

How? Flush with low ph water?

alphapinene said:

How? Flush with low ph water?

Click to expand...

Ph down

They look ok other than being a bit underfed as you mentioned. Also you cannot adjust the mediums pH by simply pouring pHed water through it, doesn't work that way. I wouldn't worry much about that as I doubt you have a pH issue.

What about those rust/brown spots? rust fungus?