Truly, BarchLoon is one of the best attack strategies for Town Hall 5 and 6that I have ever seen. With this army composition, you can get 3 star wins easily from other Town Hall 5 and 6 villages (and even from TH7 If you do it wisely).
I know this air attack strategies are quite new with most TH5 and 6 players but it is pretty easy to have a decent win with BarchLoon, just follow CursingWithCurtis’s advices!
BarchLoon Attack Strategy

BarchLoon Army Composition

Assume that we have maxed army camps. We will bring these troops into the battle:
10x Barbarian 20x Archer 26xballoon
2x healing spell
Clan Castle: hog
Hog Riders are the key of this attack strategy and should be at least level 4. You absolutely still can use this attack strategy without Hog Riders but it will be a bit harder. If your Clan mates don’t have Hog Riders, Giants or Wizards will be fine.

How to dominate TH5-6-7 with BarchLoon Attack Strategy

Step 1: Lure the enemy troops out with your Barbarians to the corner and say good bye to them by using your Archers. This is one of the most important steps of most attack strategies. If you skip this steps, those troops can ruin your attack anytime. As a Town Hall 5/6 player, I strongly recommend you read the Tips for luring troops guide!
Steps 2: Choose the closest side to the Air Defense and deploy your remaining Barbarians there and followed by Archers (your Barbarians will be the meat-shield for your Archers). Your Barbarians and Archers can set off all Spring traps and Bombs there.
Step 3: Place your Clan Castle on the side at step 2 to send Hog Riders into the battle. They can take down the enemy Air Defense and even 1-2 more Archer Towers easily. If your Hog Riders healthbars turn to red but still can’t take down the Air Defense, just drop the Healing Spells.
Step 4: Deploy your Balloons around the base with this strategy: 3 Balloons = 1 Archer Tower = 1 Cannon = 1 Mortar. 4 Balloons = 1 Wizard Tower.
You should attack Archer Towers and Wizard Towers at first because they can attack air units but other ones can’t. You still need to deploy the rest of your Balloons to boost the attack speed before it runs out of time, the Balloon’s speed is really terrible.
Some advices for you:
  • Lightning is pointless because most enemy have Dragon in their Clan Wars Clan Castle.
  • Healing Spells are perfect for fixing all troubles while using BarchLoon.
  • If your Hog Riders die before taking down the enemy Air Defense, drop 2 Healing Spells on your Balloons.
  • If you don’t have Hog Riders and Giants can’t take down the Air Defense, drop 2 HS on your Balloons.
  • If you want to attack a TH7 base, you need 2 HS.
  • If you are at Town Hall 7 and don’t have Dragons yet, you absolutely can use this attack strategy as well.
The video below can help you imagine the attack easier:
For farming, Barch is cheaper and more effective. BarchLoon army composition is quite expensive at Town Hall 5 and 6, you should just use it in Clan Wars.