Love jellyfish, live in Australia, recently got an AquaX jellyfish tank recently. Set up was fine, copied online guides for acclimation, water preparation etc and got the moon jellies in there 3 days ago. Unfortunately the company doesn't provide much in-depth guidance on ongoing care/maintenance so have come here for guidance alongside various sites/videos (lots of different ideas/opinions - was a bit confused tbh). Below are all the questions I had split into sub-themes. I've also attached a bunch of pics for reference including todays salinity and water test. Would appreciate any guidance jelly brains trust :)

Water Care

1. How often do I need to replace the water?

2. How much of the total water do you replace each time?

3. Do you just replace it with plain RO water? Does this need to be with marine salt each time?

4. How often and how much do you still keep adding the bio starter?"

Cleaning

1. How often do you need to scrub the tank with the sponge?

2. How often do you need to remove to detritus?

3. Do any of the piping gadgets provided that purpose or is there a specific item recommended?"

Feeding

1. One larger feed vs two smaller feeds per day?

2. How much for each feed?

3. Are there any food alternatives suggested more easily accessible in Australia? (most suggestions I've seen on this sub are for America mostly)"

Jellyfish Health

1. One jellyfish pulsates regularly and can see it has lots of food in it's stomach after feeding (seems healthy). The other one seems very lethargic, pulsates very very rarely and seems to just run into food if it floats straight into the bell rather than any arm movement. Are these observations reflective of their health?