Cleaning Ugly Sand

[Oscar]

I invested in a gravel siphon this week. Changed my carbon and GFO yesterday morning before siphoning.

My normal water change is 4G (13% of my water). The siphon drains water very quickly compared to how much sand is cleaned but this sure works. I filled one 4G tub yesterday and another 4G tub this morning but really did not clean much sand.

I checked for phosphates with my Elos test kit but still showing zero.

I noticed that last night my candy cane did not extend its polyps for the first time in months.

I would like to continue siphoning through the week but should I wait until the candy cane shows its polyps again as an indicator that the water has returned to normal?