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#1
September 6th, 2008, 05:29 PM
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correct hydrometer?
Does algae growth on the hydrometer effect the salinity reading? And how much? I have just a hang on the side type.
I have tried to remove the hydrometer and wash the algae off, but now there is a teensy starfish that we found and I don't want it to die. I can't figure out a way to get him out without possibly killing it ( I don't know the species..it is about 3/8in small) But, I think that it can't get out unless it gets lucky and finds the hole it climbed into anyway. Any ideas on what to do?
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Current Aquarium(s) Description: 90 gal reef: new corals,Nemo,goby,6line,pepshrimp,dispar,chromis,linkia Experience in Saltwater & Reef Aquarium Hobby: less than 1 year Other Intrests: going crazy 
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#2
September 6th, 2008, 06:08 PM
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Re: correct hydrometer?
Swish it around in the tank. The starfish will come loose and you can pour it out.
Put the hydrometer in the sun for a few days and dry it out. Then rinse the dried algae off under hot water. I use a floating glass hydrometer. The kind that looks like a glass thermometer with the little green painted stripe to let you know where the sweet spot is.
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 Tiny Tank ClubYou can't culture hair algae like this!! Don't even try .......... ROOKIE!! If I wake up with marker on my face, I'll stab you. Current Aquarium(s) Description: 30g tall reef, HOB CPR refugium, 61lbs LR, 60lbs LS, 144W T5 lighting. Experience in Saltwater & Reef Aquarium Hobby: 1.5 yrs Other Intrests: Radio Control airplanes
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#3
September 6th, 2008, 08:02 PM
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Re: correct hydrometer?
I would clean it and then take it out between uses. Always rinse between using, because the salt will build up and give you bad readings.
Current Aquarium(s) Description: 120gallon mostly sps 2 250 watt halide and vho actinics. 75 gallon sump/fuge/frag euroreef 250 Experience in Saltwater & Reef Aquarium Hobby: 5 years Other Intrests: internet porn
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#4
September 6th, 2008, 08:08 PM
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Re: correct hydrometer?
Hydrometers will very easily give you wrong readings. Leaving it in the tank will ensure this. Oscarsdad is right, you should clean the hydrometer off with fresh water in between every use.
Even with regular cleanings, hydrometers should be replaced about every 6 months because of their tendency to give faulty readings after a while. Even better, you should buy yourself a refractometer. They run about $40 to $50 (I got mine at Drs. Foster and Smith).
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Current Aquarium(s) Description: 240-gallon reef with a 55-gallon sump and 35-gallon refugium Experience in Saltwater & Reef Aquarium Hobby: 7 years
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#5
September 6th, 2008, 08:10 PM
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Re: correct hydrometer?
I got mine a the Dr.s too. I have been alot happier with a refracto, because you can see the exact level everytime.
Current Aquarium(s) Description: 120gallon mostly sps 2 250 watt halide and vho actinics. 75 gallon sump/fuge/frag euroreef 250 Experience in Saltwater & Reef Aquarium Hobby: 5 years Other Intrests: internet porn
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#6
September 6th, 2008, 09:17 PM
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Re: correct hydrometer?
Yep,Pick yourself up a refractometer.Your tank will thank you.
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Live life at full draw. Current Aquarium(s) Description: 125gal SPS tank in the works Experience in Saltwater & Reef Aquarium Hobby: 2+ Other Intrests: Hunting,camping,fishing
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#7
September 7th, 2008, 05:38 AM
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Re: correct hydrometer?
I agree. Pick up a refractometer. You'll be surprise how far the hydrometer is off.
Current Aquarium(s) Description: 120 with 30 sump Aquatinic Constellation T5 lighting Coralife Super Skimmer Koralia 2/3 Experience in Saltwater & Reef Aquarium Hobby: 2 years and counting Other Intrests: Pig collector, Gardening
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#8
September 7th, 2008, 06:00 AM
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Re: correct hydrometer?
refractometer
Current Aquarium(s) Description: 150g, 24g,8g Experience in Saltwater & Reef Aquarium Hobby: About 1 Year Other Intrests: Computers, Robotics
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#9
September 7th, 2008, 08:50 PM
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Re: correct hydrometer?
thanks for the advice everyone! I know that a refractometer is best but right now I can't afford one.
I'll swish it and dry it out later today....and then I'll leave it out like y'all said. Thanks again! Current Aquarium(s) Description: 90 gal reef: new corals,Nemo,goby,6line,pepshrimp,dispar,chromis,linkia Experience in Saltwater & Reef Aquarium Hobby: less than 1 year Other Intrests: going crazy
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