I know one of them is a 750, but I can't remember of the other 2 are 750's or 1050's. I used to have 2 1050's and 2 750's but one broke and I never replaced it. All three pumps were cleaned after being removed from the tank and they work great. Wavemaker was a cheap Wavemaker from the LFS but it did it's job! I am located behind Southwestern College in Chula Vista. Text if you have any questions. 6197091765. I will be working in my house all day and cannot deliver r meet halfway. Pick up only please.