Tank size: 20 gallons
Tank age: ~8 years
pH: 7
Temp: 77 F
Ammonia / nitrites: 0
Nitrates: 5ppm
gH & kH: both 4
This has a bit of background - please read! I'm desperate!
My boyfriend recently cycled a 40 gallon tank. He wanted platys, and went to LFS to get some. They had a very pregnant...