Nebula Grid System #034
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- Nebula Grid System #034
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- Nebula Grid System – User Guide
- 1. Overview
- The Nebula Grid System EA is a grid-based Expert Advisor for MT5 that combines:
- • Grid Trading Logic – Adds positions at predefined steps when price moves against the
- anchor.
- • ATR-based Step Calculation – Grid step can be based on ATR volatility or fixed points.
- • Bollinger Bands Width Filter – Ensures trading only during moderate volatility
- conditions.
- • Money & Risk Control – Fixed lot or lot-multiplier progression, drawdown guard, and
- optional trailing stop.
- It is designed for ranging or oscillating markets, where grid strategies are most effective. Always
- forward-test in demo before using in live trading.
- 2. Input Parameters
- Grid Settings
- • Grid Step Mode
- o Fixed Points → Uses constant step size.
- o ATR Multiplier → Step = ATR × multiplier.
- • Grid Step Points – Step size if using fixed mode.
- • ATR Multiplier – Step size in ATR mode.
- • ATR Period – ATR calculation length.
- • Max Long/Short Positions – Maximum number of grid layers allowed in each direction.
- Take Profit / Stop Loss
- • TP Multiplier – Take Profit = GridStep × multiplier.
- • SL Multiplier – Stop Loss = GridStep × multiplier.
- • Use Trailing Stop – Enable trailing stop.
- • Trail Start (points) – Distance in profit before trailing activates.
- • Trail Step (points) – Step size for trailing stop adjustment.
- Bollinger Bands Filter
- • Use BBW Filter – Enable/disable filter.
- • BB Period / Deviation – Bollinger Bands calculation.
- • BBW Min/Max (points) – Entry only if band width is within range.Money Management
- • Lot Mode – Fixed lot (simple mode).
- • Fixed Lot – Base lot size.
- • Lot Multiplier – Next order lot size = previous lot × multiplier.
- • Max Lot – Safety cap for lot size.
- Safety
- • Max Drawdown (%) – Prevents new entries when equity DD exceeds this percentage.
- • Close All On Stop – Optionally closes all EA trades when stop triggered.
- Misc
- • Slippage (points) – Maximum slippage for orders.
- • Print Debug – If true, prints detailed logs.
- 3. How It Works
- 1. The EA sets an anchor price (first entry reference).
- 2. When price moves against the position by ≥ GridStep:
- o A new grid order is added (Buy below anchor, Sell above anchor).
- o Each order has its own SL/TP (if enabled).
- 3. Bollinger Bands Width ensures entries only when volatility is within defined limits.
- 4. Trailing Stop can protect profits once in gain.
- 5. Equity Drawdown Guard halts new trading if account equity falls below safe levels.
- 4. Recommended Usage
- • Best on ranging pairs: EURUSD, AUDUSD, GBPJPY.
- • Timeframes: M15 – H1 (avoid too low to reduce noise).
- • Demo Test First: Grid trading is high-risk if unchecked.
- • Avoid during strong news/trend markets, as grids expand and increase exposure.
- 5. Example Settings
- EURUSD M15
- • Grid Step Mode: ATR Multiplier
- • ATR Period: 14• ATR Multiplier: 1.5
- • TP Multiplier: 1.0
- • SL Multiplier: 2.0
- • Max Long/Short Positions: 5
- • Fixed Lot: 0.10
- • Lot Multiplier: 1.0 (disable martingale)
- • BB Period: 20, Deviation: 2.0
- • BBW Min: 80, Max: 800
- 6. Risk Notes
- • Grid trading inherently carries martingale-like risk when price trends strongly without
- pullback.
- • Always test with small lot sizes and enable drawdown guard.
- • Consider combining with manual intervention or equity protection rules.