fiberglass fish tank/ cement fish tank

[Chamsiddine Afraitane]

What the difference between fiberglass fish tank and cement  fish tank ?

In other word will the cement affect the level of the PH in the tank ?

Thank you and regards

[Ryan Chatterson]

Unless it's old it will effect ph. Most people will use a fish safe epoxy paint to seal the cement. I've seen a lot of casket holders converted into bait tanks.

[Sylvia Bernstein]

Ditto what Ryan said. Cement will affect pH. I just heard of someone using Thoro-seal on their cement, if that helps.

[Harold Sukhbir]

If for some reason(cost,availability etc.) you must use cement as a fish tank you'll need to acid treat it first. I've read that they apply muriatic acid twice and rinse the same amount of times. Apparently the term used for the process is deflocculates, gets rid of calcium.