My DIY Question - Is this safe?

[Ascendant]

My DIY sponge filter -

1. Aquaclear powerhead 201.
2. Tubing.
3. Foam cut from sponge filter.

Very basic.
But I have a question. In order to attach the tubing to the aquaclear powerhead, I melted the plastic together so that it can fit on. Is this safe????

The tubing is then torn through into the foam that i acquired from my original sponge filter.

Then placed in the water, sucking up water and debris that gets caught in the sponge.

My head feels dizzy from all those fumes... Ugh.

[Abbeys_Mom]

Why are you rigging it this way? Wouldn't using a regular sponge filter be better?

[blue fin]

Melting the plastic to make it fit can release certain bad chemicals but as long as you wash it thouroughly it should be fine, you can sometimes get away with the larger size by using nylon wire-ties though and not need to melt the hose to shrink it

[Lady Hobbs]

If in doubt, buy a sponge filter and just attach your pump to it. They are dirt cheap.

[cocoa_pleco]

a good double headed sponge filter is like 10 bucks, and a single is 6 bucks