The ragtop DIY tank is shown here:

as the design spec shows, it is simply:

1. a containment tank
2. a tarp
3. the tarp connected to the containment tank by drilling holes in the plastic and using zipties to connect the tarp to the tank.

You may review this video or this post for more details.

The topic of this post is the evolution of the Ragtop DIY tank to a “Slant-Top DIY tank” as follows:

1. take dowel rods and run them through the front 2 holes in the lip of the tank so that the tarp is raised. Raising the tarp achieves two things. First it allows water to run off (like an Oasis tank) instead of droplets getting in your eyes. Second it provides more breathing room, which reduces claustrophobia and eliminates the occasional sense of suffocation I experienced in the Ragtop DIY tank.
2. replace the portable heating and plumbing of the Ragtop with a jacuzzi spa-pak: the jacuzzi spa-pak would heat the water and filter the water all in one. This passive heating approach is used in the i-sopod float tank which is a world-class tank.

I will expand on these 2 points below:

Using dowel rods to raise the tarp

If we use dowel rods, we would place them at position ‘A’ and position ‘1’ so that the tarp would be higher than it is

Using a jacuzzi spa-pak to heat and purify the water

I want to use something like this to heat and purify the water:

The use of a spa-pak in DIY tank designs is not new. The DFT DIY tank used a spa pak to heat the water. However, he also had a hayward pump and filter… I’m aiming for simplicity and want a spa-pak to handle both.