MARS HYDRO TS1000 overkill for seedlings? What am i doing wrong?

About 7 days since sprouting, 20/4 light cycle, bio bizz light mix, 24-27 degree Celsius, 40% humidity, don't seem to be growing well and leaves seem to be yellowing and turning away from the light. Any advice?

seedlings like it hot and humid

Deantrfc said:

About 7 days since sprouting, 20/4 light cycle, bio bizz light mix, 24-27 degree Celsius, 40% humidity, don't seem to be growing well and leaves seem to be yellowing and turning away from the light. Any advice?

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You could take a clear plastic beer cup and mist inside of it, place this over seedling ,be sure leaves don't touch cup. Also lightly mist dirt before placing cup down over seedling.
That should increase humidity/temp's as ideally you want it 80 f for LED's with proper humidity, look up VPN ( vapor pressure deficit on forum)below is an example with chart if you read links
You need a way to check humidity/temps once you cant fit leaves under cup as by then they should be ok if you slowly introduce to tent environment. A humidifier helps till plant gets bigger. If VPD is low because you have dry air then seedling gets burned from too much nutes from soil. If you have it right it won't happen as soil seems ok but I have never used it.

You need to use a spray bottle and gallon freezer ziploc bags to mist the inside of and slip over top of those pots. Seedlings and new clones need HELLA humidity to stay happy

I had them under half cut plastic bottles at first but they didn't seem to like it that's why I had taken them off. Transferred a few to the greenhouse but the 2 I've kept in the tent the new growth looks a lot better. I think it might have been a mix of the light being too strong for seedlings and the soil maybe a tad too hot but they seem to have grown through it, hopefully. I also didn't know the light could be dimmed I've kept it at the same for now though as they look a lot better then they did