help i think

[Aquaria]

ok well have a 46g bow running since dec 16 thats when i got my cuc in. well last night i started with seachem's "reef plus" vitamins and amino acids and when i got up this morning i noticed a strange smell coming from the tank, its nice outside so windows are open and blowing the air down the hall wheni got closer i pinpointed the smell its like standing on the beach when the surf is coming in i believe its the dead surf smell only been to the ocean once so im not sure. ill be posting perams tonight, as i have to go out for a bit. but if anyone has had an experience with reef plus or know what this smell is ill take any advice till i can post perams