I am tackling the office tank which should prove interesting as it is in a 24hour operation center.
I checked out the setup today. I've seen the tank all the time but never really paid too close attention to it.
I found the box of chemicals, testing kits, fertilizer and treatments... wow. pH up, pH down, melafix? pH neutralizer, cycle starter, clarifier, and a few other things. The heater is in the box too. The room is kept at around 70F all the time so it's not bad, just a little cold. Thick thick layer of nasty gravel with some sort of plant gravel mixed in.
Taking some water home to test today as the test kits were partial and really old.
I need to rehome a huge pleco. There is one oto cat, one cory of some form that I don't recognize, a few false rummy nose tetra , I think and a few harlequin rasbora... that aren't halerquin rasbora... or even rasbora for that matter. There are two plants of unknown descent.
This will be a test of my luck.
I'm debating how much I want to work with what is there against starting from scratch with a sand buildup. I will see if the fish are going to work if I just bump up their numbers... but 20 gallons and three schools doesn't sound ideal in my mind without overstocking the tank to get the shoal numbers up... but I can't see it without three unless I go with a species tank... something small to get the numbers up to 20.
Without doing any research I might go with pygmy hatchet fish , corys and oto cats for a three species setup... plants of course. I expect the water to be softer than home (how could it not be?) One of my swords will get re-homed, I need more real estate back home. Perhaps the store can take the extra fish.
Initial list of stuff: new light bulb, it's a T8 18". New test kit... don't need the GH/KH. I'll donate my unopened bottle of prime. Flourish comprehensive. Sand (if I go that way, I think I need to for the corys). heater and thermometer.
I'll post some pics once I get along... oh, I dropped in some of my overage dwarf hygrophila today... a little extra green even spruced it up a bit.... There are at least a dozen stems in there and some short floating pieces. I'll need to change out the light soomer than later I think.