Calculators have been added back to the site, I've added the basic volume volume and unit converter calcs, however there is more to come. Rather than me decide on whats next, how about you let me know what calculator you wish to see?
http://www.fishcrazy.co.uk/calculators/default.aspx
awesome stuff, fish length calculator for me next I would like.
Rekord 120 3 Black Widow Tetras, 2 Banded Rainbow Fish, 1 Bristlenose catfish, 3 Rummy Nose Tetra
Rekord 70 Plants - Vallis Nana, Vallis Tiger, Crypt Wendtii Green, Crypt Wendtii Tropica, Sagittaria Subulata Livestock - 5 Japonica Shrimp, 3 Ottos, 6 Cardinal Tetra, 3 x Rainbow Shrimp