Thanks all, I unplugged the CO2 (Turn the valve to the lowest) last night.
Topped up some water and that help clears up somewhat. I turned it back on this morning and I'll update you later. I don't believe this is bacterial bloom and certainly hope not, genomer. The tank has been up for quite a long time, no substrate disturbances whatsoever. The only thing I can think of is the addition of some 20 tiny cherry shrimp, nothing major.
I remember when we setup the CO2 initially, there was no bubble and I saw some smoke (smoke under water? Nah, it doesn't sound right, more like dusting) coming out of the outlet. I immediately removed the ladder all together and this happened very quickly. I didn't pay too much attention to it, now that I'm thinking back, could it be the cause of cloudy water?
I don't get bubbles coming out of the CO2 continuously, is that normal? I use 1/4 tsp yeast and no baking soda. It outputs a batch of bubbles, 2-3 bubbles on each step are moving up the ladder like I see someone else DIY CO2 on youtube, then it will slow down to 1 bubble per ladder moving up slowly, then completely stops, no bubbles, for like 20 seconds. Is the formula not strong enough?
I also noticed the bubble size is not consistent, sometimes you'll see a larger bubble, and bubbles will not get smaller and smaller as they climb up the ladder. Whatever size it outputs, that's the size it will get out of the ladder on top.
Is my formula not good enough? Should I use baking soda/powder?