first of all hello !this is my first post , am running a jewel rio 180 , all is well with the tank and fishi have stocked over the past 6 months , 2 angels , 4 rainbows , guppys , plattys ( which a we speak are producing fry in the trap ), buenas aries tetras X 6 , red eye tetra x 6 , x4 cardinal tetras , and my pride and joy gold nugget pleco .
am realy pleased with tank apart from the substrate , which is plain gravel !! I realy would like to change for black sand ? but as my tank is running what would be the best and less stress to the fish and my self ??? thanks in advance for any replys
am realy pleased with tank apart from the substrate , which is plain gravel !! I realy would like to change for black sand ? but as my tank is running what would be the best and less stress to the fish and my self ??? thanks in advance for any replys

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