I have a 75 reef tank that up and running over a year. Nitrites and ammonia are 0 and nitrates are at 5. Im going to turn my 55gallon into a seahorse tank. To start up I was thinking of taking about 15 gallons of water out of reef tank and put into the 55 to help with start up. What that be an issue? Would it even be worth transferring over since its not even 50%. Im going to be running a hob and fx6 that I used for 25 cichlids. I will be deep cleaning both. What kind of media should I put in the fx6. Ill put some liverock and artificial coral for the seahorses to hang on. Doing bare bottom. I will also be adding pipefish in the tank with alot of cuc. Thanks for any advice.