Early stage problem/possible Ph fluctuation

Joel67

Member
Hello, guys!

I think I have a minor problem, at least I hope so, but would like to know for sure what have happened and how to sole the issue. I will try to be brief, so here it goes:

At the 7th day of grow I decided to give my 4 plants ( 2 Shortstuff Snowryders, 1 Shortsuff #1, and 1 Auto Assassin) a bit of extra Mg. Here is a pic of one of Sryders - for me it looks like first stage of Mg def.

I switched to 18/6h routine and gave modest amount of Epsom Salts, 1/2 teaspoon/1 liter , through foliar feeding. After couple of day or smth I noticed some brown spots and probable Mg def symptoms seemed to intensify.

At the 8th day I had first watering with runoff with molasses - almost teaspoon per 2 liters. ( prior to that 3 watering - 70, 100, 100 ml of water PH 6,5 - 6,7) Here are pics. Snowryders






#1


,and Assassin which looks perfectly fine.



Overall look:



By the way soil is - it is quite low in nutrients. Some random seedling phase soil with a bit of peat. NPK 11-18-20. Similar to Plagron.

On soil package states that it is PH6-7./ Have used it before, and it was around 6,7. Now I rechecked runoff, it was:

1. water 6,7; runoff 7,1; soil 7,3?

2. water 6,7; runoff 6,9; soil 7,1?

Could it be some PH fluctuations/some hotspots due to not proper mixture of soil, low quality, something else?

After first full scale watering with runoff spotting doesn`t advance - maybe it fixed hotspot problem-, but plants look slightly too small for age.

Tomorrow (Day 14) I should water plants. Theoretically I should start giving nutes, I use Hesi TNT (NPK 3-2-3).

Guys, any thoughts?


P.S. Sorry for my English, not my native and haven`t used it for a while.


I made pictures couple of days ago. Now seems that rusty and white spots don`t spread, but intervein chlorosis is. Here is example
 
Top