How often are you feeding and watering? I'm telling you mate you need to be watering those babies everyday with a very light feed!! I'll take a bite from a Taipan if I'm wrong!!
No problem I assure you I'm only trying to help I had the same problems with coco for quite some time until I finally figured it out. Now I'm off and running and I just wanna pass along the knowledge.
Well I'm only adding a very small amount of synthetic nutrient so yes that first gallon will be fine for 7-10 days without issue. Don't forget to PH it to around 6.0
The first week while my seedling has just sprouted in the solo cup I just use 1/2 ML of the Dyno Gro Flora Grow per gallon and only feed/water every other day for 7-10 days. I don't use the Hydroton until I've transplated them into their final pot.
Hydroton is those small pieces of volcanic rock you can find at almost any hydro store. As soon as my seedling sprouts I give it a very light feed like make 1/2 ML to the whole gallon. I use Dyna Gro Flora Gro/Bloom it's cheap and its a 1 part nutrient and I have had very good results with it...
I've done both and trust me I've had a ton of problems letting coco dry out. You can grow monsters in smaller pots if you treat your coco like its your hydroponic reservoir. Think about it in hydro the roots are constantly submerged underwater and get oxygen from the water via air stones and...
Gotta admit I haven't had much success treating coco like soil I've always had a ton of problems treating it that way plus the growth seems much slower kinda like soil. Not saying your wrong perhaps it's the type of or brand of coco/perlite that makes a difference.
Just from my personal experience you don't treat coco like its soil and you don't wait for it to dry up a bit before watering again as this can cause a myriad of problems and deficiencies. Coco retains water and oxygen very well but it also dries up quicker because all the oxygen that it allows...
I love Coco but lots of misinformation out there and I had to learn the hard way!! First week after they pop in solo cups you need to water and very light feed every other day for the first week until good runoff.
2nd week hit those babies everyday with a very light feed/water everyday until...