i am using pvc for my overflow is the regukar pvc glue ok for this or is it toxic

Would need to know the ingredients, but you can use superglue.

After drying it is safe, I use it in my reef!

glue which is used on pipes that are food grade quality is best but even so, give it a good rinse after it sets :)

i am still so scared about using super glue in my octo tank. which kinds if any are toxic to the pus?

the list would be huge... better to just know that superglue is nontoxic ;)

that doesnt make sense you said the list would be huge but then how would all superglue ne non-toxic? wouldnt the lsit be small then?

no what is in superglue is a non toxic chem.

there are many, many, many other chems out there that would be toxic