First Grow

Things are going well for 3 out of 4 plants. The Quarter Pounders and Pineapple Express are budding up nicely now and starting to smell so nice. But the Magnum seems to be lagging behind. Its definitely in flower and throwing lots of hairs but next to no frost/trichome so far. Bit confused as this is supposed to be a faster auto apparently, around 60-80days i think and were on 57-57 now and we have a long ways to go still, it's still in full stretch going on 3 weeks now. Whereas the Pineapple Express seems to be right on schedule, its stretch has started to slow down and the buds are developing nicely. Wonderful smell, it totally smells like Pineapple/Sweet/tropical. Hope i managed to preserve the terps through the cure when this is done, its going to be nice. And on the flip side, the Quarter Pounders, which were advertised as long/XL autos needing 85+ days, seem to be the furthest along of the bunch. They've slowed their stretch rather quickly and are staying short and stocky when these were supposed to be tall autos (2M!), so nowhere near the size. But the buds on these are forming up great and getting nice and frosty already. I've done some light defoliation on all the plants to help with air flow and light penetration, little bit more LST, mostly small adjustments. Some light touches of burn on some of the newer growth here and there so I've backed off on the nutrients trying to keep it just under 1EC. Runoff pH was running a little high for a long time but recently started to swing down to 5.6.