New Veg growth is yellow...help please

Started about two weeks ago. Don’t know if it’s to much nitrogen, iron deficiency, or some nute lockout. Started happening after I used Cyco grow xl for 2nd time. Added cal-mag, and Dr Repair last two waterings. Any suggestions on how to fix this or if they are done for. On week 4 of veg.
Animal Cookies and Sour OG Cheese are the strain.

Vegging under two T8 4foot lights
Feeding 800-900 ppm
Cyco Nutrients Grow A&B, B1boost, Uptake, Ryzofuel, Silica, and Zyme.

Youre ok brother, deep breath its not bad.

Does the new growth come out limey green then turn emerald green then dark green like rest of plant? Cause thats what new veg growth looks like when pushing nutes for growth.

I think you are ok. Im assuming you know your water pH and check nute pH.....
1st pic kinda shows some nitrogen burn but looks like it got a heavy feed like you suggested.
2nd & 3rd pic look good actually.

Back off the ppm a bit or less volume of nutes for plants like the 1st picture. They all have enough Nitrogen.

3rd pic and the droopy fan leaves in all three pics kinda suggests needing phosphorus. Again assuming pH checked etc..

Yea I run ph at 6.0-6.2 after added nutes. I didn’t know if it was caused by the Cyco XL which is high is phosphorus. Any good suggestions for a phosphorus nute?

For phosphorus, a slightly higher pH for your nute solution. At 6.4 you'd have almost twice as much phosphorus available as well as increased availability of other nutrients.

The higher pH would help with droopy leaves and the downward curl the leaf blades have in the 1st pic.

Alright. Appreciate the info

You don't mention what soil your in but it looks like Fox Farms OF. If so I agree with Snoopy808 that you should up your ph to 6.4-6.5 range.

Soil is pro mix HP

Thanks guys. I’m pretty sure I figured out the problem. Think I have a sulfur deficiency. Yellowing of leaves on new growth and slow minimal growth over the last two weeks. I flushed all my plants yesterday with straight PH water and some added epsom salt. They seem to be looking a touch better this morning. I’ll keep ya updated to see if this was the problem in a few days. Thanks for the time and recommendations.