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Easy 10 points!!!!Does this sound like a good 50 gallon marine tank? - top fin 50 powerhead

LIVING
Mills Brush (plant.Also Christmas tree which have 100 watts of light for my tank, if you grow the plants)
-50 Pounds. Refugm debris (rock en vivo)
FISH / invest
-1 Firefish
Bicolor Purple or -1 Dottyback (Who is the best two-color or purple?)
Mexican Turbo Snail -2
-1 Chalk Bass
-1 Ocellaris Clownfish (My mama said you can get too)
-1 Blue & Pink Sea Star
Six Line Wrasse -1
Coral Beauty Angelfish -1
-3 Dwarf Zebra Hermit Crabs
-1 Bicolor Blenny
DECOR
End-Top ® Rose Coral Aquarium Ornament
End-Top ® Barrel Aquarium Ornament with airstone
- 40 pounds. Special Seaflor Grade Reef Sand CaribSea
Top Fin ® Coral with Plants Aquarium Ornament
FOOD
Alga-sec
Marine Flakes
"Mysis Shrimp
MATIENENCE
™-Oceanic Natural Sea Salt Mix
Skimmer SeaClone
-Red Sea Hydrometer w / Digital Thermometer
Life Cycle Aquarium Supplement
-300/70 Aqua Clear power filter (30-70 gallons)
-1 EHEIM Aquaball Powerhead
Do I have a? These fish are compatible? The decor is ok?