I dose Excel and Brightwell's FlorinAxis sparingly. FlorinMulti daily w/iron and Comprehensive weekly. I have an RO/DI unit that makes 150gpd. I think that and my weekly wc is the secret w/ spot dosing w/ excel. When I add excel I use a long syringe and kill 2 birds w/ 1 stone. I now have 30+ Signifer Rainbows, 5 hara hara catfish and a good clean up crew.
90gal 4 54w t5ho midday & aqua flora
Fluval G6 canister
Emperor 400 hob
Sand substrate
R/O DI water w/ kent r/o right for pwc
Flourish excel, comprehensive, iron and root tabs Brightwell MultiFlorin and FlorinAxis
4 types of Val's
4 types of Crypts
2 types of Ludwigia
Narrow leaf temple
Mexican oak leaf
Micro swords
Dwarf sag
Bacopa
Rotala Indica
Water sprite
Java fern mats
Java fern lace
2 types of anubias
3 moss balls
Moss ball cut n glued to slade for carpet
Flame and xmas moss mini walls
Amazon Sword and 2 others I can't remember.