Planted Tank Guru
Join Date: Apr 2011
Location: Hamilton, Ontario, Canada
In general, no.
If you go for a slower growing, bit less depending plants and cut down the EI dosing amounts, so thus, less water changes and get the CO2 and light in balance with the ferts dosing, it can be done. They won't be thriving, but the less water changes and CO2, obviously keeping surface agitation up to keep O2 levels high as well can also increase their chances of being happy.
Lots of people adjust EI to suit their plants, CO2, light, water change schedule and amount, etc. It's not a full hard in set rule. People can grow full carpets with root tabs and no CO2 and the proper lights, so you don't have to go full high tech and still have a nice tank.
If you do want to go full out though, and go for super fast, lush growth, then I'd stay away from adding CRS. If you want to wait longer, some people have made mid tech planted tanks and CRS work.
Also helps to be good at breeding CRS though in the first place and know how to breed them and keep them to try this in the first place.
20g platy, , 2 x 10g shrimp, 3 x 20g shrimp, 7.5g shrimp and 1 great dane/mastiff puppy.
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My Tanks and my shrimps