artur
Aquarium Advice Freak
Thanks for all your help before. You can see my sump/fuge in DIY forum. This week I will change some plumbing. I will have Mag 12 going thru chiller to one overflow and Mag 9.5 go directly to second overflow in my 125 reef. Do I need check-valves in line between pump and overflow <always had them But I,m not sure if I need them>. I know they restrict a flow a lot. Please let me know. Thanks.