how to make iodine blocks?

[owain20]

does anyone know how to make blocks, im sure you use plaster of paris, seaweed and few other things?

[barrieshutt]

Why not make your own mineral block for the avairy,this can be used along side your iodine block and cuttlebone.

You need a mould about the size of half a common brick,this could be made out of 12mm ply or we could search the garage or garden shed for a suitable container,i use the bottom 6" of a 2 litre plastic milk bottle.

Mix dry a quantity of cement,oyster shell grit,lime,sharp sand,charcoal,ground eggshell,crushed iodine block,powdered cuttlebone and some dried kelp.Now add water until it is moist and can be pressed into the container,do not have it to dry or it will crumble when removed from the mould.

[owain20]

Thanks barrie just so happens i have alot of cement. Ill give it a go. and post up pics.

[hector]

Hey owain20,
how did it went with the home made iodine block making?