New tanks REQUIRE more care in the startup. ADA, myself, ADG, most experienced plant keepers suggest many water change sin the initial 1-2 months.
Eg, once every 3 days or so, 50% etc, then after. Typically 1-2 months.
By this time, you should know what good plant growth looks like.
Then slowly and progressively reduce the dosign till you hit a point where the growth and look of the plants is not the same/negative, then dose the prior highest amount.
NOW, you taper off the water changes.
Going once a week, then try once every 2 weeks, then once a month.
LESS light, lower temps and wise plant choices will make or break such lower frequency water change methods FYI.
More light, higher temps and stem weedy plants will make it much harder.
A 20-55 gallon tank that's a mess is not too bad to fix, a 300 gallon tank is a huge headache.
So while you decided/chose to have a larger tank, an ounce of prevention will be worth a pound of cure if you intend to avoid the work and simple management methods. So water changes are pretty easy compared to testing a lot, and dealing with algae and poor plant growth.
Most are not that lucky.
My advice is to make the water changes easier, send the waste water to yard landscape irrigation etc,
I automated several client's tanks in the 250-1600 Gallon ranges, they change about 10% daily automatically. So 30 gallons worth of water is pretty easy to deal with, changing your shower head can save this much.