I'm just finishing a run of those two strains (12 OG Kush, 29 Chem Dog, 3 Cheese) and I can tell you, the OG kush is a VERY light feeder compared to Chem Dawg D. I fed it once and basically gave it nothing but plain water for the rest of my run and still it was overfed. Chem Dawg yellows up a lot in late flower, so keep an eye on the bottom leaves. Cheese is the stinkiest thing I've ever grown, never again. 3 of them overpowered an entire room of OGK/CDD. Chopping my OGK at day 71 (today) and giving the CDD a couple more days. They definitely fattened up in the last couple weeks, I never got around to adding molasses but I'd recommend it. Just watch the nutes!