Good advice but problom solved ,the filter in the sink needed to be changed...PPM reading of 25 now!

Also I have a big tub in the room that I let water sit in for a day, then ph it and add nutes...and feed.

That filter cuts all the chlorine out too...what a life saver in that department...but everything is going good.They all have popped and no stretching ,the biggest stretch is about 4 inches. :thumbsup: