My Honest Review of the Sunsun HQJ-700G Internal Filter: 6 Months of Use

1. First Impressions & Setup

When I first unboxed this filter, I was surprised by how heavy it felt. The build quality looked solid – no flimsy plastic here. The installation process took me about 20 minutes, mostly because I had to adjust the suction cups three times before they held properly. But once it was running, the quiet hum was a relief compared to my old filter’s constant whirring.

2. Performance in My 30-Gallon Tank

Let me tell you – this thing works. My betta fish used to get stressed when I did water changes, but now his fins are flaring more than ever. The triple filtration system really makes a difference. I’ve included a water test chart below showing how ammonia levels dropped from 0.8ppm to undetectable in just 48 hours:

3. Maintenance Made Easy

Changing the filter media is a breeze now that I’ve figured out the trick – always turn it off first! The magnetic closure on the media basket is genius. I use a mix of activated carbon and bio-balls, and cleaning the foam pre-filter only takes me 5 minutes now. Pro tip: Let the used media soak in old tank water before rinsing – saves time!

4. Noise Level Comparison

Here’s the real shocker – this filter is quieter than my laptop fan! I recorded decibel levels at different settings:

• Low: 38dB (barely noticeable)
• Medium: 42dB (like a soft whisper)
• High: 48dB (still better than my old model)

Perfect for my home office setup!

5. Long-Term Reliability

After six months, the motor still runs smoothly. I did have to replace the O-ring once when it started leaking, but that’s normal wear and tear. The only thing I wish was different? The power cord could be a bit longer – I ended up buying a 6-foot extension cable.

6. Value for Money

At the price point, this beats every other filter I’ve tried. Compared to the Fluval 306, it’s half the cost but does 90% of the work. And unlike the AquaClear 30, you don’t need a ladder to change the media!

7. Ideal For…

Beginners and experienced aquarists alike. Works great in:

• Betta tanks (10-20 gallons)
• Small community setups
• Planted tanks with moderate fish load

Not recommended for large cichlid tanks though – the flow isn’t strong enough.

Final Verdict

Would I recommend this? Absolutely. My tank has never been healthier. The only thing I’d change is adding a built-in timer, but that’s a minor quibble. If you’re looking for reliable, quiet filtration without breaking the bank, this is your filter.

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