Issues with my seedlings in DWC

Hi guys, kept these in plain PH'd tap water, I let the chlorine evaporate for 24 hours prior. Got a 10cm air stone in with a 5 watt pump, my roots were suffering with algae but have cleared that up now. No root rot, my ph is at 6.0 and have tried feeding them some very small quantity of micro nutrients as I read boron deficiency would create retarded growth. They've been getting worse since I fed them and were almost yellow prior. If you guys could give me some advice here I'd really really appreciate it. Seems green thumb is not in my nature.. Adam

You know you have to feed them right? They don't eat just water and light or water, light, and micros. You need the full balanced nutrient profile.

NPK
Calcium
Magnesium
Sulfur
Other Micros

The plant needs all of these things all of the time, from about day 3 of life forward (it's eating the nutes in the seed for the first few days.) Your medium (water in this case) needs to have all of these in sufficient quantity and be at the correct PH range.

According to your post you haven't provided them what they have needed, so they have struggled to collect the minimums to survive instead of flourishing with access to everything they need/want.

To make this extra easy, check out Maxibloom and Maxigrow. They are as good as any nutrient I have tried (and cheaper than all but 1), and make it extra easy with being a 1 part nutrient. Just add enough to hit the PPM you want then adjust PH and you are GTG.


Seed - 600 PPM
Baby - 800 PPM
Veg - 1200 PPM
Early/Mid Flower - 1600+ PPM (strains vary a lot here, some don't like any more than 1200, some like 2000+, increase slowly so you don't find out the hard way.)
Late Flower - 500 PPM

It was after I added micro they started getting browning leaves.. not sure what to do.

I just presumed it'd be the same method as soil. I grew my last in a hempy bucket (perlite, vermiculite mix) so presumed it would be nutrient burn from adding micros. Have tried one out of the three in a seperate bucket with all 3 of the jungle juice nutrient bottles mixed in.. starting off at 75ppm just to see if its going to help.

soil is loaded with nutrients. Water has almost none. That is what hydro nutrients are for. In hydro you can't feed nothing. You also can't feed many nutrients meant for soil. Those nutrients rely on microbes to break down the nutrients to a plant usable level. That only happens in soil or similar, not in a DWC or similar hydro system.

You must feed complete nutrition (AKA, don't feed one thing at a time, feed it a complete diet) and a fairly constant rate in hydro. You top off and adjust to your target PH and PPM range. 75 PPM is hysterically low and will kill your plants slowly.

You need to read something on hydro, it's apparent you are working under some false assumptions that will result in failure.

Okay mate, I've done some reading but nothing was particularly clear about when to actually start feeding them. Thankyou for your advice, I've added a full set of nutrients to my resevoir and now going to wait and see what happens.