Re: Questions on Corydoras
I clean my tank by hovering a gravel cleaner above the substrate so that minimal sand is being sucked up. The detritus and other unwanted gunk is usually lighter and will be sucked in without much issue.
With respect to your issue on the quarantined Corydoras.. Perhaps the Corydoras was just exploring the new environment and hence was more active than usual. Other possibilities could be the position of your quarantine tank, temperature, water condition, light, etc..
Overly active Corydoras might not be a good thing either, actually. It might also be a sign of poor water conditions or that the activity near the tank is causing them to be scared. This is especially so in a pet store since many people dip their nets in and knock on the glass.
Setup: ADA Cube Garden 45-P, Starlitz Clear 45, Eheim Aquacompact 40
Layout/Hardscape: ADA Amazonia Powder Soil, Borneowild Rutsuuddo Wood (SS Root Type)
Fauna: Apisto Trifasciata, Sundadanio Axelrodi (Blue), Yamato Shrimp
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