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Hi bernie, are you saying you think the light is too intense? I am running a growlush globe which claims to be super high lumens, seems strange as i have grown with different 600w lights without issue but never a cooltube, maybe the glass is magnifying or has some grease on it causing an...

Yes its not hot at all i have a split system ac and temps are perfect i have a fan blowing over them too between plants and light

So i had some issues and nursed my plants back to good health, however i had some of the serated edges of the leaves and new growth start to curl upwards as if light stressed, raised my light and it helped, plants have now grown a bit and the light is still 1m away but they ststarted doing...

Ok so they are recovering well and im 100% sure they are hungry, i gave them a full strength feed yesterday and they greened right up again, What i am finding is when i feed them, they start to come green again and looking good, then after a day i notice they are slightly yellowing again...

They are coming back to life now, thanks for all the help, turns out they were relly hungry but really bouncing back now, looking at replacing my 600w hps with a 600w equivalent viraspectra v600 to keep heat and costs down, pic attached

Ok i will do that next watering, I just gave 1 plant a dose at twice strength it had before so 2ml/l algamic and 2ml/l biogrow i will report back once i see some changes thanks again for the help

Really thank you for that last response, very helpfull, i have given them all 1/2 strenght bio nutes yesterday and made sure i only watered lightly with about 1/2 a litre through each 4L pot, they definatly showed signs of improvment since then greening up and lifting up instead of drooping...

Did a ph test with a kit here are the results attached in pics, looks like 6.0-6.5 to me? Never used one before but my other cheap probe gave same readings so i guess they must be hungry, i noticed the soil i purchased had holes in the bags, a big no no for me and i usually use sealed bags...

Whats the best way to test soil ph?

Gjs4786 thanks i will figure ph out tomorrow and try pressing roots as described, i just checked and i can see roots have just hit the bottom of the pot

Fair enough How can you tell the size by the picture?

Ok i will try that after lighli out, i have checked on them today and they are perking up a bit but showing some weird possible deficiency symptoms pics attached, any ideas anyone?

8 hours after feeding, they seem to be perking up

I only plan on keeping 6 of these and this is not a tent, i usually plant a few more seedlings than i need and pic the best, plants will go into 20L final buckets

Ok i watered just now with 1ml/L grow and 1ml/1L algamic (hopefully not too strong) i used 2x 2litre bottles to water all 10 4L pots so will keep an eye on them and report back (pic added)

Copied from the biobizz website "Alg-A-Mic is an all organic additive, stimulant, and vitality booster for plants that utilises the many benefits of cold-pressed seaweed concentrate. The high-quality seaweed formula contains a healthy mix of micronutrients (including magnesium and calcium)...

Ok great, i think when you say microbes algamic covers that? If so i will give that and bio grow and yes i am using biobizz all organic, now do i feed now or let them dry more?

How confident are we im not going to burn my plants adding nutes next feed to solve the apparent N deficiency? ?

Thanks, seems ok then

Also is it worth mentioning my 600whps is hanging 2foot above, is this too close? It was closer so i moved it up a week or so ago, thanks