Converting Baquacil to Bleach

[supermom]

I'm a newbee here and am so intrigued by all of your info that we've decided to switch from the AWFUL baquacil which has almost caused a divorce for the last 4 summers to bleach!! We had good luck with baquacil 1 year then algea overtook us for the next 3. We have changed our sand multiple times because the pool lady thought cotton was gumbing up the sand--we changed it atleast 3 times per year and we still fought algea. SO here we are ready to convert to bleach. We took off cover today and the bottom has a nice green layer on it. We are filling with water now and I did test the water and it seems to have no baquacil. pH is currently at 7.2. We just changed sand today also. Once our water gets up to the correct level should we start pumping in bleach or do we need to vacuum to waste whats already on bottom? I know that our pool will turn cool shades of green and we need to hold bleach at 15ppm which will tell us the conversion is complete. Is there any other advice as we are diving head first into this as we are SICK of baquacil and all there "false" hope!!
21' ag vinyl
3/4hp pump with sand filter
Thanks for any advice!!! Maybe we'll get through this summer divorce free!!! and enjoying our pool!!!!