I think I am complete on the conversion and have taken photos.
I started on Tues 18:00. Added 4.3 182 oz jugs of bleach and the green happened as expected. Continued to add bleach throughout Wednesday and finally got clearer water. Opened up the cover this morning (Thurs) and it seems to be done. FC held overnight and I have my first set of test results. Please can anybody advise as to the next steps on my results...
CYA=0 (is this right - I followed the instructins in my TFT test kit....still read 0. I'm using a lot of Chlorine when the cover is off but it holds when the cover is on)
Thanks and hear are some pictures - I'll organise them better for others to see when I finally get my internet installed.