It definately will happen---when we have extracted and wasted all the coal, oil and gas. There will be no choice. Talk about glow danios, we will all be glowing in the dark from the use and involvement with the next form of energy.
If they escape and start breeding around your house they can be very difficult and expensive to get rid of because they are resistant to most insecticides.
I have not used them but have a number of similar filters without the noodles that I use in small tanks and find them very good. I found the suckers give out very quickly on the other types of sponge filters but these have been great. I doubt there would be much advantage having such a small volume of noodles.
Ideal for breeding most small egg layers. With a dozen of them and hundreds of raising tanks you could supply the NZ market with one species and save importing.
If the silicone has given out I would strongly suggest that you pull the whole tank apart and reglue it from scratch. If one part has given up the rest is probably about to and it may not be a small leak but a total collapse next time. Even without the inside fillet it should not leak so things are not right. It would only cost about $15 and some time.
You would want to be sure they are SAE regardless of what they are sold as. Black line flying foxes are not the same thing and are not as good at cleaning up algae. They seem to get a bit more lazy as they get older and will eat less algae if they get other foods that they prefer. I have 2 in a 1200 tank and they get fed once a month wether they need it or not.
They may be off the list for the importers they buy from. Mollies will like some other species have more requirements when imported in the future if the proposed changes to the quarantine requirements are carried out. This may mean that importers will leave them off the list.
I had mine made by Argus Heating a few years ago and it cost a bit over $100. Thermostat was from Homershams for about the same. You give Argus the footprint and wattage you want and they will sort it out.
It actually works very well and I would think is pretty efficient. The heat pad is a professionally made one and the thermostat is very accurate. The polystyrene is underneath the mat and that covers the complete footprint of the tank. You need to have a relatively shallow media layer (mine is sand and about 30mm deep. If you have it too thick or uneven there will be problems. There is a lag period from when the thermostat turns the heat off which gives a bit of variation in temperature but not enough to cause a problem to plants or fish. It has CO2 injection and the plants do well in there.
I have a double tank stand with two 1200mm long tanks and each tank is heated with an undertank heating element controlled by a thermostat. The top tank is divided into 6 seperate tanks and normally used for breeding and the bottom tank for growing plants. Pretty quiet at the moment as somebody keeps shaking them.
Flourish xl is a source of carbon for plants, You also need light and macro nutrients as well as what you have been adding. The less light and carbon, the less macro.
I was talking to a young English guy in the house accross the road a few days ago and he said that coming from England he was very keen to buy a brick house rather than a weatherboard "T" house like they were renting. After the quakes they now have their heart set on a weatherboard place. Sister in law with husband and four kids lives in a two storey house in Templeton which has avoided any real damage. The bedrooms are all upstairs but everybody sleeps downstairs. The timber frame houses we tend to build are very flexable which means they will move a lot but generally return. The upstairs of course realy gets serious about the moving a lot and scares a lot of people. We have friends who sustained no real damage to their flat but are still sleeping in the car in the driveway.
Most people in Christchurch have no desire to live or work in multi storey buildings or in brick or brick veneer buildings because of the damage done to many of the buildings built that way. For the same reason buildings with large areas of glass that would break in a quake are not popular either. Most people you talk to would be happy to live in a single storey weatherboard home even though some of them tried to bury themselves with the liquifaction.