tekjunkie28 Posted January 30, 2023 Share Posted January 30, 2023 I have had a Deep Blue professional 30 gallon? 33 gallon? long... Yea idk gallon it is. I was used as a "sump" for my reef tank for a few years. It hasn't had water in it since 2012 or 2011. Its been sitting in the garage since then. It looks fine and the silicon feels find. Its black silicon and slightly faded but the tank has been sitting under a shelf for 10+ years out of the sun, only exposed to cold temps and warm temps. Is this tank still good? Glass is all fine. Link to comment Share on other sites More sharing options...
Remi de Groot Posted January 30, 2023 Share Posted January 30, 2023 I agree with @Pepere. And if you don't trust it. Just reseal the tank. It's actually not that hard of a task and actually fun to do. King of DIY has some great older videos how to do it (before his ADHD kicked into his videos). Link to comment Share on other sites More sharing options...
lefty o Posted January 30, 2023 Share Posted January 30, 2023 i would bet it is fine. fill it with water somewhere safe, and let it sit for a few days. Link to comment Share on other sites More sharing options...
gardenman Posted January 30, 2023 Share Posted January 30, 2023 Just a quick warning. While most people insist the black silicone is stronger, I've found in my limited experience that it's not. I only had one tank with black silicone but it sprang two leaks in the first five years. My clear silicone tanks go far longer. Maybe I just got a bad tank, but I ended up tearing it down and redoing it with clear and no more problems. Link to comment Share on other sites More sharing options...
tekjunkie28 Posted January 31, 2023 Author Share Posted January 31, 2023 I filled it with water. I had a 75 from deep blue while running this as the sump. Sadly the 75 cracked while in storage. The RO tipped over and hit just right so I trashed it. Link to comment Share on other sites More sharing options...
nabokovfan87 Posted January 31, 2023 Share Posted January 31, 2023 Smaller tanks tend to have "lower warranties" depending on who makes them. Something like a big box store 10g has a 1 year or 90 day warranty while a larger one will be 3-15 years. Depending on manufacturing technique, I would inspect the seam for any sort of tears or rips. Discoloration means that you could have less overall strength due to material fatigue. It might mean replacing it is a good option, but that really is hard to say. Some things discolor due to UV (garage with windows) or will discolor because of loss of structural integrity. Link to comment Share on other sites More sharing options...
EVoyager31 Posted February 1, 2023 Share Posted February 1, 2023 Fill it and test….. outside 😜 Link to comment Share on other sites More sharing options...
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