Stunted non-growing Mexican Airlines auto

[Cerul]

Hi guys,

I have a 25 day old Mexican Airlines auto that I'm growing in DWC with details as follows:

3.5 gallon reservoir treated with 4 ml Watermax (sterile grow as discussed by @greenjeans),
Sunleaves grow rocks
1.5 ml of Rapidstart
1 ml of Botanicare CNS17 grow
Meizhi LED 300W at a distance of 30 inches.
Water has been pH'd to 5.8 (checked twice daily) and TDS to 88 ppm or 176 us/cm @ 22 °C.

She was growing fine till day 10 after which all further growth stopped. I have tried my best to figure out what the problem could be but I'm at a loss. The base leaves are yellowing and the overall size is just over 2.5 inches in diameter and 0.5 inches high. I have a Critical Chaze F1 auto next to it which has taken off and growing normally.

Here are a couple pics of the Critical Chaze F1 auto which is doing great!

 

[MedGrower]

88 ppm sounds like really low feed. Perhaps you should push the feed to around 250 to 300 ppm by now? Kind of looks like potassium deficiency but I cannot be certain. I think with intense light like 300w blasting with so low feed she really needs more nutrients than that. All the best!

 

[Cerul]

Thanks @MedGrower, I will amend her nutes right away. Fingers crossed!

 

[NVbiker]

Thanks @MedGrower, I will amend her nutes right away. Fingers crossed!

88ppm any other photo would be dead wow