Thought it was overwatering

[gavlp20]

Hi all first will tell you the environment 

25c-28c lights on

20c lights off

3 weeks in to flowering 

1.3-1.4 ec

ph 6.0

hum 65% ish

IWS pro system change res every week 100% clay pebbles 

some cal mag and A and B

started last week looked a bit overwatered I up the time on the flood so went back to normal setting then thought root rot but all seem good when I have looked now getting all types of problems can’t but my finger on it I emptied res 3 days ago and added some silver bullet but don’t seem to be improving they was lovely before any advice would be nice 

[gavlp20]

Oh I have 3 under LED and 4 under 600hps

[KC]

Some pictures with the hps off would be better buddy, it makes it really hard to see what's going on. Just a thought but could you have too much light going on? What size space are you using and what are the 3 led lights?

[gavlp20]

Just now, KC said:

Some pictures with the hps off would be better buddy, it makes it really hard to see what's going on. Just a thought but could you have too much light going on? What size space are you using and what are the 3 led lights?

Hi mate I meant 3 plants under a custom build 670w and 4 plants under 600hps I will get some more pictures the room is a 2.4m x 2.4m but only using half for the flowering

[stummer]

First thing I would do is check your ph pen….got some leaves curling which looks like over watering. Then also got some sticking up n marks on the leaves. Makes me think they aren’t happy with what’s going in them.

[gavlp20]

[gavlp20]

Ok well that’s a bit better picture hopefully I checked my PH pen and it’s perfect but what is strange is I emptied the res this morning and added plain water so just checked the PH and it’s saying 8.0 I was having issues with rising ph so I just kept lowering it thinking it was the heat causing the issue 

[gavlp20]

So I reckon it could be to much calcium cause it looks like they have many deficiencies what do you reckon?