I was stupid on Saturday, I jump cloned my only tower capable pilot to a clone in Curse without checking that he didn't need to empty silos. I jumped and last night realised that I still had 8 hours to go on the JC timer and tower silos that would be full in less than an hour.
He did need to JC to help setup a new cyno toon in Curse but I should have emptied the towers first. Hindsight is a wonderful thing, I lost about 7 hours of production of sylramic fibres. A corp mate wasn't able to help so whilst I slept my income was static.
Fortunately the Fullerides continued being produced and I was able to login this morning with the overflow silo full and the primary silo 96% full.
It's not a major loss but it's one that was totally avoidable and all because I didn't follow my usual routine of emptying towers before jump cloning.