@Op, please listen to everyone giving you advice buddy... you are opening yourself up to a lot of problems and probably going to sink yourself deeper into debt.
I've been growing for around 8 years now and only just getting things dialed in :D
All the best in whatever you decide to do
If you want to rule out chlorine then i have found this is a good product...
Ecothrive Neutralise - Water Conditioner
or you could ro your water, expensive to buy the machine though.
My first thought for tips yellowing would be too much nutes though
He does mention his own products from time to time but i don't begrudge him that and don't think he pushes it, maybe i haven't watched enough of his videos yet :thumb:
Spot on... he comes across as a very honest and straight up man, i haven't even looked at the price of the sensors.
If you have watched other videos of him that are interesting please link them here :thumb: