Ira

Only effective for waterborne algae. For algae on surfaces you might as well take the cash and use it to scrub the algae off rocks.

No, they don't HAVE to be in schools. They will survive on their own, but they are generally healthier, more active and live longer due to being less stressed in schools.

A relatively inexpensive marine one.

Are they? I thought they were only around $10?

Bandages are made to be removed so you can take pictures.

It depends on the density of the coil. if it's 1/6th the length yeah, if it's the same length, no.

Errr...No, the same amount of heat goes into the water, it's just spread over a larger area.

The big problem is all the much that will get stirred up removing the old gravel and dust from the new gravel. You can scoop out the gravel if you want and then very gently set the new gravel in(Like in bags or something opened once it's at the bottom) But I think you'd be better off removing the fish and as much water as practical and putting them in a big bucket or another tank while you do it.

PICTURES! :bounce:

To begin with she's less likely to scatter any eggs without a male around, secondly without a male to fertilise the eggs as she scatters them(I assume you've had the birds and the bees talk at some point?) all you have is bunch of little tasty balls rotting on the bottom of the tank if you don't have any bottom feeders to eat them. Angel fish will eat the eggs if they find them, yes.

Fair enough. The only effect coil length has is on how hot the heater gets when operating. 300 watts(We'll assume for now that is the correct amount of heat being created) spread over a larger area=lower temperature than over a smaller area. But even short ones if you put your hand on them once they've been on for a little while are usually only warm. They quickly heat up because your hand doesn't carry away heat as quick as water though. But a longer coil is good if you have it leaning against something or it drops onto the gravel, keeps the hotspots that will develop from being as hot.

I've never heard of banana cake before... Oh...It's banana bread! Ok, wait, you put icing on it?!?

They are egg scatters. There has never been, and likely never will be, a pregnant danio.

Believe what? Believe that their tests in whatever air temperatures they used in whatever tank glass thickness and shape they used at whatever duty cycle they used would keep a tank at whatever temperature they wanted to use? Sure, it probably will. That's assuming they even did any actual tests rather than just just plugging the wattage into an equation.

Yes, it would be nice if they were, but they are not. Many "Ratings" for equipment, not just in the aquarium hobby, are 50% random conditions, 50%whatever marketing wants the results to be. Battery manufacturers will test their batteries at different current draws to get the capacity they want, computer power supply manufacturers will slap different rating stickers on the same power supplies depending on what the buyer wants, speed controllers for electric motors will be tested at different amounts of airflow for cooling and then the safety factor increased or decreased for whatever rating they want...

Varies hugely depending on room temp, of course. And a 100 watt heater won't work any harder than a 200 watt. It will just cycle on and off less frequently, which means the thermostat, the only real wear item in them, will live longer.

Possibly a difference in back emf due to the different wiring distances...But that would just be so stupidly small. Most likely a fan, like suphew says. That's assuming his concerns are actually valid and not a case of "Someone sometime told me with some unrelated equipment that I shouldn't turn it off at the wall."

It will be fine if you run 2-3 of them.

Fluval 404 a couple years ago were about $80 US, so about $120 NZ.

I've heard there are CF2200 cannister filters, If you can find some I'd go with a pair of those. For the return from the sump, it depends a lot. I had a Laguna PJ7000 which is, iirc 6000 liters per hour on the sump on my 300 liter tank.

I want a handful when they're big enough.

Coldwater bristlenoses? No. It is completely possible to have them in a cool tank with goldfish though. Put a heater in it and set it for 22ish, both fish should be fine.

I was going to say something along the lines of "Severum: Ooooh, plants om nom nom" But lawnmowers works too.

Oh...Yeah, fish don't care what color the water is. Assuming the water quality is otherwise ok. In fact, I suspect many would prefer it.

Depends on the catfish, there are several hundred species of catfish. Cories are reasonably good for cleaning up dropped food, but don't eat algae. Plecos aren't quite as good at eating missed food, but do eat algae. A bristlenose or two would probably be your best bet.