Help me please diagnose?

Ph 6.0, in rockwool cubes (42 litre) directly under 600w light roughly 40-43 inches above the plant, feeding GH nutes 2.0ml of each, roughly 26 days old I am very worried about this plant as it's very slow on growth and not very wide either. I can't put my finger on it guys some help would be greatly appreciated

mag def by the look of things

NO nutrients yet - just a good root stimulator (great White) they are still in the early seedling stage of growth, wait till week 3 - if feedinf before that time use nutrient rates at 1/8 amounts of directed amounts. Feeding nutrients early is a common issues . you "baby" will do just fine

Thank you guys! And harris hawk the think is their cotlyedons are dying back now so i gathered a weak ish nutrient source would be good? Thank you for your replies

if that plant is 26 days ,u need to rethink some growing styles. peace

Add a Ca/Mg and start feeding.
How does it get "wet" - bottom up or some sort of drip? ebb?

Other then R1's answer - don't pay attention.

hope you're not using distilled water.

Dr. Who said:

Add a Ca/Mg and start feeding.
How does it get "wet" - bottom up or some sort of drip? ebb?

Other then R1's answer - don't pay attention.

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Thanks man i appreciate it and it gets wet by normal feeding watered from above and my water is soft water have our own water system but it should be alright to water them with right? My 9 other plants are fine it's just this one

Rockwool said:

Thanks man i appreciate it and it gets wet by normal feeding watered from above and my water is soft water have our own water system but it should be alright to water them with right? My 9 other plants are fine it's just this one

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AHH! Does the water softener use salt? NOT GOOD FOR PLANTS! The ppm of the softened water would have to be below 150 and even less for me to use, due to the salt.

Hmm, Water/feed runs straight through? Doesn't sit in the pot right?
You may have to do a run through several times a day with rockwool with the media you use, as an Ebb & Flow system does.....4-5 times a day!

I'm just having a hard time wrapping my head around your media and how your using it.

Dr. Who said:

AHH! Does the water softener use salt? NOT GOOD FOR PLANTS! The ppm of the softened water would have to be below 150 and even less for me to use, due to the salt.

Hmm, Water/feed runs straight through? Doesn't sit in the pot right?
You may have to do a run through several times a day with rockwool with the media you use, as an Ebb & Flow system does.....4-5 times a day!

I'm just having a hard time wrapping my head around your media and how your using it.

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No i have no water softner haha sorry should have made it clearer, i have my own spring.. The water is soft naturally, i understand you may think it is odd that i water straight through rockwool cubes but the last time i grew it gave fantastic results... The only issue is i propogate in rockwool propogation cubes and it gives them a terrible start.. It seems the babies are okay with the exception of a few now some look underwatered so perhaps i'll run through multiple times a day?? Overwatering should be almost impossible with rockwool right?

Rockwool said:

No i have no water softner haha sorry should have made it clearer, i have my own spring.. The water is soft naturally, i understand you may think it is odd that i water straight through rockwool cubes but the last time i grew it gave fantastic results... The only issue is i propogate in rockwool propogation cubes and it gives them a terrible start.. It seems the babies are okay with the exception of a few now some look underwatered so perhaps i'll run through multiple times a day?? Overwatering should be almost impossible with rockwool right?

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The water, Ah I see now! Ever check the ppm's of that for simply knowing?

One run through though?
I say it because I used to do SOG in Rockwool in trays and it was an Ebb system set for 5 cycles a day......1 at lights on, 3 spaced till the one right before lights out (to carry the moisture through)......Yeah with 5 cycles I was pushing them a tic but, got great results..
I suspect you should do at least 3 times a day. At lights on - midway through and just before lights out.
If you did it before and it worked out ok for you AND you were happy with the result - Do what worked but I think you'll get far better results with 3 and better yet with 4...

I

Dr. Who said:

The water, Ah I see now! Ever check the ppm's of that for simply knowing?

One run through though?
I say it because I used to do SOG in Rockwool in trays and it was an Ebb system set for 5 cycles a day......1 at lights on, 3 spaced till the one right before lights out (to carry the moisture through)......Yeah with 5 cycles I was pushing them a tic but, got great results..
I suspect you should do at least 3 times a day. At lights on - midway through and just before lights out.
If you did it before and it worked out ok for you AND you were happy with the result - Do what worked but I think you'll get far better results with 3 and better yet with 4...

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really appreciate your help mate you seriously are so helpful... I have a couple plants now that look as though they are in dire need for water.. Already today since 10 (gmt) i have watered them both 4 times and it seems the water is just running through? I checked the ph of one and it's actually at 8! Yikes! I can't see how it got that high baring in mind it's consistently been at 6.0.. And also set at 5.8 in water day before. Why is the water running through and not holding? Is there any chance of these two surviving at all? I feel like a rookie with such issues occurring it's ridiculous.. I feel terrible for these poor ladies they don't deserve it. Furthermore, no ppm meter currently but ec at 0.05 max i don't know if that helps you at all but clearly it's very pure perhaps much too so?

To me it looks as though the seedlings were not yet ready for the big jump to the final pots.....
Roots should have been coming out of the plug before moving them up!
Was the rockwool conditioned first before use? Important thing! Could be the pH problem...

I used to use root riot plugs to start mine. When ready - roots coming out pretty well (more then a single and sometimes till a cpl inch's exposed) The right into 4X4" rockwool cubes and into the tray's....

I may have chosen to use a continues drip halo style with what your doing for media. I can't say I've actually seen that done but, see no reason why it shouldn't work.

Dr. Who said:

To me it looks as though the seedlings were not yet ready for the big jump to the final pots.....
Roots should have been coming out of the plug before moving them up!
Was the rockwool conditioned first before use? Important thing! Could be the pH problem...

I used to use root riot plugs to start mine. When ready - roots coming out pretty well (more then a single and sometimes till a cpl inch's exposed) The right into 4X4" rockwool cubes and into the tray's....

I may have chosen to use a continues drip halo style with what your doing for media. I can't say I've actually seen that done but, see no reason why it shouldn't work.

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You think? That's weird man because there was an abundance of roots out the bottom when i had transplanted ah i suppose win some lose some but i prefer for a lady to have a good quality of life of course. I will keep flushing at regulated ph and yes i soaked them at 5.8 for a day so it should have regulated?

Rockwool said:

You think? That's weird man because there was an abundance of roots out the bottom when i had transplanted ah i suppose win some lose some but i prefer for a lady to have a good quality of life of course. I will keep flushing at regulated ph and yes i soaked them at 5.8 for a day so it should have regulated?

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Yeah should have,,,,,

I used to go from the root riot to 3X3" cubes and run them in a small starter tray and then put them into Hydroton for my DWC for better surviving results.....They stayed in the tray till roots began to come out the bottom of the cube.....100% success rate that way. More stable pH too.....

That's just how several of us did it here.....

Could very well be the lack of solution to roots to hot for what what you got there. Sure not damping off!

Dr. Who said:

Could very well be the lack of solution to roots to hot for what what you got there. Sure not damping off!

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Okay i'll change my next run to try true hydroponics like yourself! Better do my research ready for the next ones! Thanks again for the help Dr. Who i'll see what i can do to help my poor ladies