Some of these don't look like starting clones/cuttings. Are they cuttings or do they have roots? If they have roots, go full nutrients. If they don't have roots you can go very low ppm or even just water.
How about the lights? PAR/Temp/Humidity? Water temp? Air temp?
But some of those look like they probably have roots, so if ppm is too low and you're giving them full light you can get nitrogen deficiency pretty fast. If there are roots, make sure they're in the water, not above. You can give an aero gap above the water line once the root body extends well into the water.
So fill in some of that data for me. Silica definitely not necessary at this stage, if ever, if you're using a full spectrum base.
Cal-Mag with Iron will be very necessary if you're using RO or distilled water (which you absolutely should be for hydro). Municipal or well water will have a lot of minerals and other crap which can product lockouts. Better to start from 0 going forward. Buy distilled gallons or RO filter, pretty cheap.