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@CosmicMan , Welcome to the club, yes go with a sump a lot nicer and easier by a lot, do not buy everything from amazon, if you don't mind used stuff post in the wtb forum, and you will find some goodies and a lot of times for half of the price or even free, and if you have any questions just...
@Paulie 069 , tell me about it, when you comeback from a 15 year hiatus, you're like a newbie, so many new tech but at the end of the day is time and how diligent you are with your good husbandry* with the tank
I apologize about this rumbling of ideas ahead of time, so here I go.
I was watching a video about coral spawning and I love the idea, so it got me thinking that will be a nice goal for me to try to get corals to spawn, and I went and talk to my wife and she told me she has requirements for me...
@Paulie 069 , that is a personal choice, I don't have experience with bio balls and I know lots of people hate them and other love them, for the aerobic bacteria to populate needs surface area, now the sale some bio bricks and things like that, some people use live rock for the same purpose.
Gabe
The problem with PO4 is that binds your calcium, so it can be absorbed by the corals, even if it looks higher that what it is. And if you keep it at the same level is less than the amount that issuable, the same applies to magnesium and calcium.