Common aquarium-purchase mistakes that waste money - cheap heaters, unquarantined fish, generic LEDs.
You see a beautiful fish, you buy it - 2 weeks later it's dead. Always research adult size + parameters + tankmate compatibility BEFORE walking into the store.
A $15 heater that fails open cooks your tank ($500+ loss). Spend $40-60 on a quality heater + $30 on an external controller. Always.
Cheap LEDs run hot, fade in 12 months, have inconsistent spectrum. Premium LEDs (Radion, Hydra, Twinstar, Kessil) last 30,000+ hours and pay back over 3-5 years.
Some species are restricted by state. Always check the state legality matrix before purchase to avoid Lacey Act violations.
A $80 second tank prevents one $500+ tank-wide ich/velvet outbreak. Pays back within the first 12 months.
"Reef-safe with caution" includes lots of species that eat coral. Always cross-reference with FishBase, Reef2Reef, or Fast Aquatics species library before buying.
Browse the full common mistakes library.