This series of small grow-out and breeding tanks for my killies are what I affectionately call 'tanklets'.
 

Corridor view of customized tanks, made for a previous hobbyist who has decided to scale down to maintain spousal harmony.... his reduction is my additions ;o) There's yet another 8 such tanks awaiting to join in the fun.

x

There is a 'slot' in the low barrier wall along the corridor and these tanklets are to the left of it.  On the right of this 'slot', is a daphnia culturing tank with green-water, under stacks of take-away containers housing young fry. In this pic, the top tank houses about 20 juvenile Aplochelius Kirchmayeri or Gao Killie. Their parents are looks like this. Below that, is a 1-foot cube tanklet, holding newly purchased plants and I prefer safe-sex... urm... safe-practice, I mean... and quarantine not just fish but for plants as well! Fresh water has since replaced the first fill and anubias, frogbits and an un-ID'ed plant was added to 'season' the water.  Snails and paramecium were added to speed up micro-organism count.

x

Since none of these tanklets will be aerated or additional filtration via canisters or Hang-On-Tank {HOT) filters, I rely heavily on plants and the principles of a mini-eco to maintain balance. Floating at the surface is a small Pistia stratiotes or Water lettuce, which is considered a weed North America.  Beside it is a nuphar-like un-ID'ed plant.

x

There are 2 thermometers at the front and in case anyone is wondering, it's to settle a doubt that arised from this thread regarding low-maintenance setups. On the left is a mainland-made cheapo while the right is a Japanese-made 'Lab-grade' 0-100ºC thermometer.

x

x

The pics will tell ya that even cheapo thermos can give 'Lab-grade' ones a run for their money... of course YMMV. 27.25º against 27.50º Celcius... 'elmike', you happy now? ;o) Ambient temperature in the shaded corridor was between 29~30ºC with overcast sky and no wind.  It's definitely warmer outside.

x

Just for the fun of it, I'm growing emersed hybrid echinodorus in an 'elephant' vessel, which drains water through it's 'mouth'. Substrate combo of clay, coco-peat and home-made compost, is topped up with 8-mesh gravel, locally known as Lonestar.

x