Estes Spectrastone Permaglo Black Lagoon Gravel by Estes $30.56 select a variant 5-lb - $30.56 select a variant 5-lb Title 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Spectrastone Permaglo black lagoon is an ideal substrate for fresh water and marine tanks. Our Permaglo colors use silica quartz which is an inert stone that will not affect pH.IngredientsN/A
