I don’t, I just get from attitude seeds and have yet to try other seed banks, haven’t grown a whole lot yet. Like one said, I always wondered if having a ec tap water like yours could cause issues if you feed 1.0 or less or like they said, 1.3 ec. My ec tap is .5 or .6, it fluctuates.
So upping ec since you cannot water more often may be a good choice and if that doesn’t help then perhaps it is just a lost cause. That is a lot for seeds. How many seeds altogether? I just get like 5 pack or less for 50$ or less.