First grow - auto 60 grapefruit

Well, got rid of the fungus gnats within a couple of days, DE top dressing and nematodes clered them up in a couple of days but the damage was done, pretty sure they came in the bag soil as Ive been pretty anal about keeping nasties away. Going alright but she's no where near as big as I was hoping although she does seem to be getting a stretch on now shes started flowering. New light never showed up thanks to a useless seller so not sure if my Mars Hydro will be here to max her out before harvest although I am going straight to them directly once the refund clears, definitely not keen on the CFL - shouldda done a bit more research and spent an extra $50. Got what I believe to be a nitrogen def which does not seem to be clearing even though I'm increasing nutes every water, I read about foliar feed and the community seems divided abiut foliar feed when theh start flowering. I'm not disheartened that I'm expecting a small harvest, joining an encouraging community is definitely setting me up to succeed - already planning my next grow (thinking biobizz lightmix and advanced nutes under the new LED) and going to check out fast buds rather than this unknown seed which I got cause I wanted a lil something to grow fast enough to take on a holiday next month, it will be a little something, but better than nothing. As ever, any tips and advice gratefully welcomed! See you next week!