DT phytoplankton substitute?

[anadliv]

Currently I use DT's phtoplankton for my reef tank. I find this stuff to be very expensive at about 10 dollars a bottle at my LFS. My question is DTs the same thing as green water which is fed to rotifiers? Could I grow my own phytoplankton as green water or does anyone know how to grow phytoplanton?

 

[coral keeper]

Yes, you can grow your own phytoplankton. The "green" water that they feed rotifiers is phytoplankton. Here are a few links to some good site with good info on phytoplankton.
http://www.melevsreef.com/phytoplankton.html
https://forums.saltwaterfish.com/t/265208/grow-your-own-phyto
http://www.advancedaquarist.com/issu...02/breeder.htm