Ppm for seedling soil

[bear13]

Hi Guys,
seeking some advice. I germinated 3 auto seeds and potted them in a soil less seedling medium. All three popped from the soil but died with in 48 hours.
I tested the run off on the medium I used and it was over 7000 😳 am I right in thinking this medium just burnt the seedlings to death?
I’ve got 3 more seeds germinated and have flushed the soil to around 500 before I plant them. Think that will solve the problem?
Soil PH was 6.8 and I used 5.8 ph water for germination. Had the seedlings under a vented cut plastic bottle bottom. Light wise a very cheap purple 45w at 24” for the early stages only.

cheers guys 🙏🏻👊🏼

[Mr.furley]

7000, way way way to high. 500, that's high as well. First week or two can be around 100ppm to 300ppm. It is easier to recover from a deficiency then frying your plant, they will not recover at that age.

Can you tell me exactly what brand of soil/soilless medium are you using?

[bear13]

Cheers Mr Furley!

yer just as I thought. I live on a small island in south east asia. It’s a locally made product. I’ll do a final flush on the soil to reduce it further. I’ve got the flora series nutes, cal mag, flora nectar and purpinator so can give the plant exactly what it needs as and when.
There’s lots of local coco here, think I’ll give that a go as well on the next run…
thanks for your reply man much appreciated 👊🏼🙏🏻