Which Smooth-On materials are aquarium safe?

The following Smooth-On materials are designated as aquarium safe.

  • Clear Flex 50 & 95
  • Dragon Skin Series
  • Rebound Series
  • Mold Star 15, 16 & 30
  • Ecoflex 00-30 & 00-50
  • SORTA-Clear 18, 37 & 40
  • Simpact 60A & 85A
  • Crystal Clear 200 & 202
  • Tarbender
  • Free Form AIR
  • Free Form SCULPT
  • Free Form Habitat
  • Free Form Habitat Flex FR
  • Habitat Cast N Coat
  • Smooth Cast 45D, 60D, 61D, 65D & 66D
  • Smooth Cast 300, 305, 310, 320, 321, 322, 325, 326 & 327
  • Smooth Cast ONYX FAST & SLOW
  • Super Instant
  • Ignite pigments, SO-Strong tints and Silc Pig pigments when mixed with Smooth-On silicone, urethane or epoxy materials presented on this list in accordance with the technical bulletin.
  • Cast Magic Powders when mixed with Smooth-On silicone, urethane or epoxy materials presented on this list in accordance with the technical bulletin.

DO NOT USE

Metal powders, Mold Max silicone, OOMOO silicone, VytaFlex urethane, ReoFlex urethane, PMC urethane, FlexFoam-iT!, Soma Foama.

Testing Overview

Cured samples of the above products were individually tested. They were mixed, applied and properly cured in accordance with their respective technical bulletins. Base line readings of an aquatic environment were taken. Cured material specimens were then put into the tank for an extended period of time with a variety of fish and invertebrates including clown fish. The water was tested for contaminants at defined intervals. At the conclusion of the testing, contaminant readings did not change and all aquatic life was unaffected by individual material specimens.

Disclaimer
This FAQ article is offered as a guideline and offers possible solutions to problems encountered during mold making and casting. No warranty is implied and it is up to the end user to determine suitability for any specific application. Always refer to the provided Technical Bulletins (TB) & Safety Data Sheets (SDS) before using any material. A small scale test is suggested to determine suitability of any recommendation before trying on a larger scale for any application.