It's been a while since i've done any home brew as temperature fluctuations killed a handfull of the last few


Anyway, I'm back and I've invested in a new set up, nothing exciting but have a huge plastic storage box sat on a yoga mat (as flooring is ceramic tiles!), within that I have an aquarium heater that is thermostatically controlled.
I put a Wherry kit in primary FV inside the 'water bath' setup for 13 days with the water at around a third of the height of the FV and this sat at 20.5C (floating thermometer inside the FV AND the floating one in the water bath were the same). As the Gravity remained constant for 24-36 hours, I barrelled this on Friday evening and stuck the barrell back in the water bath for 48 hours. The Wherry is looking and tasting great

NOW, I bought a Coopers APA single can kit and also some Youngs Beer Enhancer to go with it, the Youngs enhancer looked pretty much the same as the Coopers No.2 enhancer the kit recommended (but was a tad cheaper).
On Sunday evening I got to work, I poured the malt extract into the FV then added two litres of boiling water, dissolved this completely, then went to add the enhancer, which went all clumpy

**I believe the yeast will find it and get it anyway, but this should just mean maybe the SG reading may be a bit off (as not all sugars were dissolved at the time)**
I topped it up to 23 litres, checked the temp (19C) and pitched the yeast.
The lid then went on and into the water bath the FV went.
I did knock the temperature down a bit and both inside the FV and the water bath read a constant 19C - I have read that because Coopers APA contains both Lager and Ale yeast it needs to ferment at a lower temperature, a lot of people have said 18C but I wanted to err on the side of caution being as this is my first Coopers APA kit!
(I am trying this one with a view to having a play with it in the near future

ANYWAY (again lol).
The question is - last night after 24 hours there was not frothy head. The lid had expanded so I know something is going on but the yeast looked like a cut down version of the trub that forms on the bottom of the FV. This morning there was a very light froth on top (36 hours later).
Is this normal, is the Coopers APA a slow starter? does it not create much froth whilst fermenting? Is my temperature too low/high?
I'm hoping i've done everything correctly and it'll be fine, I just get a bit twitchy when trying something new and I have heard that the APA is amazing once conditioned, so would be a double smack in the chops if i've buggered it up....
Anyways, any comments gratefully appreciated.
Thanks.
Steve.