Number one....stop the bushmaster. If it's in your res dump everything and start over. If you don't know what Bushmaster does why are you using it?

2. Fresh rez with this in it only: Distilled water.......CalMag....to 600ppms.......If your Flora Bloom is one part (it is...isn't it?) then add 600ppms of it to make a total of 1200.
thats all .....NOTHING ELSE.

3. Adjust ph to 5.5-6.0 and do not let it wander beyond this. Check it several times a day if you have to.

4. keep your room temp and water temp within the recommended range.

i'll check in later and see how they are.

good luck.