Issue with Young Squash

[LemonMoon]

I've started a few different varieties of summer and winter squash indoors under my grow lights and they seem to having some kind of issue. A lot of the leaves are going pale, then yellow, then dying. They also seem to be generally stressed. Can't figure out the issue as everything else seems to be growing fine under there. I've just started hardening them off but I know sun scald isn't the issue as the leaves were yellowing before then.

Would really appreciate some help!

 

[Chuck]

Looks like nitrogen chlorosis

 

[LemonMoon]

Looks like nitrogen chlorosis

Not sure - I just used normal potting soil so it should have the nutrients it needs. I feel like its over or under watered...?

 

[Chuck]

Not sure - I just used normal potting soil so it should have the nutrients it needs. I feel like its over or under watered...?

If you haven't fertilized by now, that is the reason, guaranteed. Start by using HastaGrow at 1/2 the rate. When the plant needs watering again use it at full rate. Fertilize at every watering for a month or until the plants look normal. Your watering is fine, no droops nor brown dried leaf margins.

 

[LemonMoon]

If you haven't fertilized by now, that is the reason, guaranteed. Start by using HastaGrow at 1/2 the rate. When the plant needs watering again use it at full rate. Fertilize at every watering for a month or until the plants look normal. Your watering is fine, no droops nor brown dried leaf margins.

Okay makes sense. Thanks for your help!