Pettit ECO Hybrid Reactive Technology HRT Copper-Free Bottom Paint Pettit ECO HRT Copper-Free Antifouling Paint is engineered with the latest technology available to create a strong hybrid paint film able to handle the harshest marine environments without building up over time. Pettit HRT ECOs smooth durable paint surface is designed to wear away over time thereby eliminating paint build up as well as the need for sanding. Pettit HRT ECO Copper-Free Bottom Paint is safe for use on any aluminum-h