How many crops are my grow lights good for

I bought some mh warehouse lights because i couldn't afford the sun ligths.to get straight to the point i dide't change the bubls is this y my buds are so small i have 4 mh and 3 kat piss 3 grandaddy purps and 4 skunk ones they veged fast an healthy but flowering is heart breaking .i planted them in bone meal and blood meal with pro mix soilst mix i give them foxfarm big bloom with bat guano ..i have advance nutes mirco grow and bloom and big bud is this too much?

the bulbs should last for several yrs but after a while,they loose intensity. I replace after 3-4 seasons.
only your plants can tell you if thats too much fertilizer. your way to vague to even guess. most organic soil admendments (bloodmeal,bonemeal,guano) are hard to overdo.

I posted to answer your other question but people will say to change your lights frequently but shit there are a few bulbs I have been using for over a year without any diminished yield. Your good for a while