The roots are growing pretty rapidly now, the roots are now twice size of what they were since I took the photos so I'll be potting that pineapple a bit sooner than next week. The other 2 however I'm still waiting for roots to show but looking good so far.
Thanks dyzzypyxxy I'll lay off the poultry manure pellets altogether for those pineapple plants, what I'll eventually do is dilute a little citrus feed in a spray bottle to spray the leaves every now and again.