Oh crickey get the spec! By way of example, imagine you had the edge and need to cut off a dead leaf...
1) remove the hood and lift the light up
2) remove some water from the tank
3) the hob filter will empty into the tank by siphon so you need to take even more water out
4) if you've got the tank set up with the hole quite high then you need a degree in gymnastics to get your arm in!
5) cut the leaf... Making sure that your arm doesn't displace too much water and cause an overflow! (I learned this the hard way)
6) in the 12 gallon reaching to the bottom is awkward, even with 12 inch tweezers. You don't want to knock over any hardscape or uproot any plants but you only have 1 place to put your arm... Through that hole! You can't just go around the other side of something and work on it... Your arm is stuck where it is.
7) remove the leaf
8) fill the hob filter and tank with water.
9) drop the light and replace the hood.
ALL FOR A LEAF!
for the record... This happened to me this afternoon. What a waste of 10 minutes
with the spec it's literally a case of snipping the leaf with long scissors and then using tweezers to get it out. 1 or 2 mins tops...
If it's going to be at work then keep it simple and get the spec
Things about the edge which may be worth noting:
- If water is filled to the top then bubbles get trapped in the top and it looks awful.
- You need to be able to do everything with one hand. Seriously... You'll get sick of saying "if only... " all because of that tiny hole!
- hardscape choices are very limited
- cleaning it is a pain
- using any air stones etc will create bubbles, which pop and wet the lights. So you can only use air stones when the hood is off and the light is upright.
- setting up all the wires for the heater, filter, lights etc is a pain if this tank is in a corner.
- theres very little space to get any tubes and cables in at the top of the column where the hob filter sits.
I read the reviews and thought "they're probably just exaggerating for effect". I was wrong! Everything that I read has come true and really does cause a lot of grief.
If you have patience though it will be worth it.... They look really nice
All the best!