First time ever grow. Please be gentle.

Day 22 of veg and both plants look healthy, plant 1 is about 5-6 inches tall, plant 2 is about 3-4, still slightly smaller but still looking healthy. Day 23 slight hiccup, apparently when taking my day 22 photos I left my light off when closing up the tent. Thankfully they are in veg so hopefully not to much harm down as the light was off for about 26 hours before being turned back on. Day 24 I have added an Exhale CO2 bag to the tent under advice from another grower. Both plants seem to be healthy and resilient. Temperature has gone up into the low 80’s in the tent with the warmer weather coming with spring, so will be monitoring to ensure the plants don’t get to hot. Day 26 plant 1 seems to be doing extremely well, plant 2 seems fairly stunted in its growth, it is healthy and green looking but about half the size if plant 1. It seems to be at the same stage if growth as plant 1, but the spacing between the nodes is very very short. I also tried placing the CO2 bag directly above plant 2 to see is that will help it out, I originally hung it close to plant one and it shot up an extra 2 inches in approx 3 days.