I have not run into any of these problems as of yet but do plan on having spare parts available. Pump is no big deal, home dePOT or lowes in garden section. Floats would be a different story.
Strange thing is I started this thread to help people with a PH difference and it has now turned into scare the hell out of peeps who just started using it. Common sence tells you that shit happens no matter what type of system you run. Pumps fail, timers go up in smoke and mother nature just dropped a tree on your power lines and there is nothing you can do about it. That being said no matter how you are growing you should always make sure you have access to shit that can break. I have just begun using my system and so far have been happy with it. Again I say I'm sorry it didnt work for you but who knows maybe the ganja gods dont want you to grow that way /shrug

But back to what I was trying to discuss, tested ph in buckets several times and now they run within .2 of the controller box so I would have to say the experiment was a good learning curve for me.
Have a nice day and if all else fails read my sig! :thumbsup: