Bottled Aquarium Additives: If you could only have ONE which one would it be?

[MoshJosh]

2-part or AFR for sure!

 

[leepink23]

All for reef if only 1, I dose it plus 2 part plus acropower

 

[Jasonak]

Great question, looking forward to seeing everyone's answers.
I just recently started using tropic marin A and K and C to early to see if its making a difference.
Also just started reef actif also.

 

[dschuffert]

AB+ for me. I dose it in my 900L with excellent results.

 

[Randy Holmes-Farley]

Limewater/kalkwasser

 

[Rich Klein]

All For Reef. That's the only additive I use in any case!

All For Reef plus AcroPower for aminos

 

[JoJosReef]

All For Reef plus AcroPower for aminos

I also have AcroPower thinking it might help raise my nitrates, but I haven't figured out how to use it effectively yet. Seems that when I use it I get a burst in bubble algae, another unknown macro and film algae. Nothing else suffering, but I'm not seeing more nitrates in the water. ¯\_(ツ)_/¯