This tank was purchased as an upgrade for my betta. I decided to send this tank set back almost immediately because I found the quality and design of the tank to be pretty disappointing...especially coming form Marineland. First off, the acrylic tank body scratches incredibly easily, especially compared to my other acrylic set by a different manufacturer. Even the foam packing material didn't appear to protect it well. The top and bottom of the tank were both lined with obvious scratches right out of the box! The filter that came with the set is made of flimsy plastic and doesn't sit well in the compartment designated for it. Nearly every time I opened the lid, the filtration system popped up because the cords got stuck in the hinge. The cords from the filter and light have to fit through a really narrow opening near the hinge of the tank. The tank comes with a clip to hold these, but it really doesn't help much. To add a heater, you must carefully thread the cord through a small hole on the opposite side of the lid and drop the heater through a narrow opening in the plastic that supports the filtration system, which is a real pain should you need to adjust the temperature or remove the filter for any reason. As for the lid, I don't understand why they didn't include a little feeding door like many other systems do. It is a hassle to open the entire top (especially if you are limited on space above or behind the tank) just to dump in some flakes. I did like the tank's aesthetics and corner shape when it arrived, and the quality of lightbulb included, but thats about it honestly. In my opinion, there are better tank sets to choose from...particularly if you are shopping for a Betta.