its too thick in the rear. 3 - 4" of dirt then an inch cap of sand i dont suggest going that deep but i wanted the slope. its only an inch deep in the front with no soil in the very front. i have been battling swamp gas for the last month because i made it too deep. if i was you i wouldnt spend money on eco.
i bought a large bag, don't remember the size but it was the largest i could find. i dont think i used it all either if i remember correctly there was a lot left.
i think i posted a list. the only thing that wouldve changed was the quantities. you are right, there is a pair of Apisto cac's, which were unaffected by the co2, so were the Apisto steind...
ive noticed my female cac tries to "move" the discus. sometimes rather forcefully nipping at fins.
i also just added some angelfish and restocked all the loss. (after QT mind you)
thanks, don't be jealous. if you only knew all the problems!
Okay, so I just re-read this whole thread and I have a couple of questions. First, how thick is your substrate, or if you can just remember how many bags you used? I just got a 125 gallon tank and am in the planning stage. I can't afford to fill it all with eco complete or flourite, so I was thinking about doing the potting soil with sand cap like you (my sand would be black, though... I guess my soul is darker than yours).
Also, what fish do you have in there. You said you lost a lot of them last month due to over gassing with CO2, but I never saw a complete list. I know you have discus and cardinals, and I could have sworn I saw a cockatoo dwarf cichlid in there. I was thinking of going with blue discus and apistos or blue angels and apistos.
Oh, and nice tank, btw. I am jealous. I know mine will never look this good.