water deck

Monsters:20
2x Giga Gagagigo
2x Gagagigo
2x Levia-Dragon - Daedalus
2x Warrior of Atlantis
3x Abyss Solider
2x Amphibious Bugroth MK-3
3x Mermaid Knight
3x Mother Grizzly
1x MarshMallon

Spells:13
3x Salvage
1x Lightning vortex
3x Legendary Ocean
1x Level Limit - Area B
1x Smashing Ground
1x Monster Reborn
1x Mystical Space Typhoon
1x Fissure

Traps:7
2x Bottomless Trap Hole
1x Gravity Bind
3x Solemn Judgement
2x Dust Tornado

-1X Gravity Bind -1X Level Limit-Area B +2X Dark Bribe; this will help protect your beatsticks and allow them to run rampant over opp's LP.
Marsh is random, 3X Mermaid is Overkill... -2X mermaid, -1X Marshmallon, -1X Amphibious Bugroth, +2X Nightmare Pengy, +2X Penguin Soldier / Mobius, matter of preference.

Overall fixes:

-1X Gravity Bind
-1X Level Limit
-2X Mermaid Knight
-1X Amphibious Bugroth
+2 / 3X Nightmare Penguin
+1 / 2X Penguin Soldier
+1 / 2X Mobius

I hope this helps.