Questions - Need some input

Hello. First of all thank you to everyone for all the help y’all have given me on previous questions!!

I have a question about my current sump setup. This was setup about 4 years ago and is not the ideal setup. At the time I thought I had it planned out so “perfectly” but after I had purchased everything and went to set it all up it didn’t work the way I had in my head and after some setbacks I have my current setup. I know y'all are going to read this and say "What on earth ...

Hello Reefadicts.

My name is Pedro and I am starting in this amazing world of reef tanks. I have previous experience with fresh water aquariums, but I want to change to saltwater!
I am doing a new Tank for my house in Madrid and I would appreciate to know your oppinion if the equipment that I am considering are correct or I should consider some other options . Even more, if I am considering some equipment that are not needed, please tell me.
The aquarium will have the following ...

What tank manufacturer would you recommend for a 90g RR tank? I am looking for glass with a center internal overflow with possibly 2 returns. I currently have a 75g Oceanic RR and want to keep the same foot print so I can use my existing stand and canopy. My current tank is 48x22x18 I believe. I have been thinking Aqueon, Marine Lane, Planet Aquariums, not sure of what else is out there. I don't live too far from the DFW area. Thanks for any help deciding.

what say you? do you siphon the sand bed during water changes or no?

Let me first start off by saying I have no living corals anymore. I had a bit of a temperature issue which has been resolved but I am also wondering since I had some issues keeping sps alive prior to the temp issue if my lights had something to do with it. I currently have no hair algae and tank parameters are within range.

Anyway on to the reason for my topic. My wife has given me permission to purchase 2 ecotech radions XR30w pros. I hate the cost of them of them as we all do but ...