Riffraff19 said:

Hello, I’ve got some seedlings in tupur currently planted them in solo cups last Friday. I’ll attach some photos of them. One of them has a hole in it for some reason not sure why if anyone has any advice. Also I was hoping someone with exp with tupur specifically give me some advice as to what I should be doing at this stage. I read a growing coco in seedling article and have been feeding 1/4 strength drip hydro liquid about every day until run off. They are in solo cups under a 100w led light. I’m doing a 16/8 light schedule right now. Just switched from 18/6 to the 16/8 yesterday. My ph meter isn’t that good in process of getting new one. Light is 4 in above seedlings. All fed until run off and with nutes since they opened up. That’s what the seedling in coco article reccomend. I’ll post some pics. Any help I’d appreciated and I’ll be on the look out if anyone has questions for me. Thank you

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Pics of the seedlings can be found on my last post some where sorry new to the farm. Unable to post the pics here for some reason currently.

To bad not posting a pick. Yellowing seedling most oftem means too much water. No two seedlings alike some can take it others may yellow.

Did I read that right? Your 100 watt light is 4 inches off the top of your seedling? If so, raise that puppy up to at least 24 inches - 36 inches. That's way too close.

Riffraff19 said:

Hello, I’ve got some seedlings in tupur currently planted them in solo cups last Friday. I’ll attach some photos of them. One of them has a hole in it for some reason not sure why if anyone has any advice. Also I was hoping someone with exp with tupur specifically give me some advice as to what I should be doing at this stage. I read a growing coco in seedling article and have been feeding 1/4 strength drip hydro liquid about every day until run off. They are in solo cups under a 100w led light. I’m doing a 16/8 light schedule right now. Just switched from 18/6 to the 16/8 yesterday. My ph meter isn’t that good in process of getting new one. Light is 4 in above seedlings. All fed until run off and with nutes since they opened up. That’s what the seedling in coco article reccomend. I’ll post some pics. Any help I’d appreciated and I’ll be on the look out if anyone has questions for me. Thank you

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You're on the right track man. Tupur is basically coco and perlite so treat it like coco, not soil.

That light's way too close though. 100W at 4 inches is gonna fry seedlings. Back it off to like 12-18 inches or dim it down. You want maybe 200-300 PPFD for babies. 18/6 is fine, stick with that.

pH needs to be lower for coco, like 5.7-6.0. Get some pH drops or strips until your meter shows up. Wrong pH will stall them out fast.

Feed every time, no plain water in coco. Start around 0.6-0.8 EC, maybe 300-400 ppm on the 500 scale. Make sure you're adding cal-mag because coco needs it from day one. Your quarter strength Drip Hydro should be fine if it hits those numbers.

Feed once a day to a little runoff, like 10-15%. Don't let them dry out but don't let them sit in runoff either.

Make sure those solo cups have plenty of holes in the bottom and some on the sides too. You need good drainage and air to the roots.

Keep temps around 75-80F and humidity 65-75%. Little bit of airflow to prevent damping off and gnats.

That hole in the leaf is probably just mechanical damage from when it was unfolding or maybe a tiny bug took a nibble. Check the undersides with a magnifying glass and throw up some yellow sticky traps. If you see bugs hit them with some spinosad or light neem at lights off.

When they get 3-4 nodes or you see roots coming out the holes transplant to 1 gallon pots and bump the feed up to 0.9-1.1 EC.