At some point yes. Do not think I am there yet, water change replenishes enough for now.
Since I have Apex, I am thinking to get their 2 dose pump. Also thinking of getting Trident, but will give time to see if there are any issues, probably will get in 2020...
I am close to getting one in the near future as my neighbor feeds the fish when I travel and I can’t expect them to do the dosing too.