Originally Posted by
azfishgal
IMO this is the only way to go. You want to make sure everything runs smoothly with no leaks. And yes, it might seem like a pain to fill up your 125 gallon tank only to dump it all out again, BUT it's worth it. Peace of mind is everything, especially with a tank that size. Again, I do NOT think it's wise to mix the salt in your tank. Most salt mixes leave a little film on the mixing container so if you do it in your tank, you'll have it all over your tank and pump. Plus if you get a bad batch of salt it's a pain to clean it out of your tank. This happened with my QT tank, I mixed the saltwater in my tank, figured "why not" and I ended up with a bad batch of salt and a white film on everything. Luckily it was only a 10 gallon tank, can't imagine that happening to my 125. So as time consuming as it may be, filling your tank with tap water and let it run for at least 24 hours is the best way to go. Then siphone the water out (I used my garden hose) and start mixing your saltwater in a trash can.
We did this very thing with our tank, and my husband did have to reinforce some of the plumbing for leaks. So please run your entire system for at least 24 hours, you'll be glad you did.
Oh, and I'm glad you got the lighting figured out. If I recall my husband got the additional wire at Lowes or Home Depot, so not sure why they told you they didn't have any.
Thanks for the info. I was not planning to mix my saltwater in my tank. I picked up 3 30g containers the other day for the saltwater. Do I have to have heaters in the containers while the salt is mixing? I only have 2 heaters for my tank and could the heaters melt the plastic containers? And just to clarify on you to fill the tank, you fill it up until water starts to go down into your sump and once the sump level is at the right height you turn on the return pump? Also is it dangerous to use ice cold water or steaming hot water for the leak test? I think thats all I can get. lol