waterlevel drops but SG is not affected

[luckyme]

Good day RP!

napapansin ko kasi na sa 20gals FOWLR ko araw araw bumababa yung water level (which is normal naman siguro)
pero every time nagtetest ako ng SG pero hindi sya nagbabago (lagi lang nasa 1.022 - 1.023 range)

Ista hydrometer po gamit ko


normal lang po ba yun or faulty yung meter ko?

sa research ko kasi hindi naman nageevaporate yung asin kaya dapat habang bumababa waterlevel(evaporation) e umaalat yung tubig kaya freshwater ang dapat pang topoff.

[roland_0313]

Hello,

Evaporation is normal so no need to worry about that, just make sure you replace the lost water. About your hydrometer, it might be better to buy one of those floating hydrometers for now, just to check if your current one is working or not. Di natin masasabi kung ok yan kung hindi mate-test yung tubig ng ibang paraan.

[mindfreak]

if your water is receding but your SG level is still the same then it is not evaporation, it might be leaking somewhere. kung due to evaporation yan and with a nano tank like that, madedetect agad sa hydro mo yan na tataas ang SG. check mo din skimmer mo baka masyado wet skim kaya mabilis bumaba tubig mo.

[potring]

If i were you instead of buying another thing to test your SG might as well buy a refractometer a bit expensive but a lot accurate than those things. Accuracy is the name of the game as in the long run it will be handy and much cheaper rather than buying those stuffs which are not that accurate as refracto is.
I myself is a victim of those hydrometers then bought a refracto wheeewww...... Way too far from my hydrometers, like hydrometer measures 1.024 or 1.025 in the refracto it's on the 1.029 to 1.030 big "D" tskk tssk hmmmmm........
Well if you have the budget go for refracto HTH

[immortalbreaker]

Pwedeng nagkaka-salt creep yung hinge sa swing arm nun hydrometer.

Ginagamit ko lang yun swing arm hydrometer pag nagmamadali ako. Pero mas accurate pa yung floating hydrometer.

Pwede mo din i-compensate for temperature correction yun hydrometer.

Best pa din is refractometer if you can afford one.

Ang target reading ko sa hyrdometer is 1.022 to 1.023 (midway). Para in case nga na may error, medyo safe pa ko.

[mindfreak]

yup, i had a same experience gaya ng sabi ni bro pot.

ganyan din na Ista Hydrometer gamit ko dati. pagtest ko sa Refractomer, yung normal range na 1.026 ko nasa 1.030 na pala. yung natipid mo sa pagbili ng refrac if you compute it in the long run mas napamahal ka pa dahil sa Saltmix na nasayang. hehe..

[luckyme]

every 3-4 days lang mapuno ung collection cup kaya tingin ko hindi sya
wala naman ako napansing leak dapat nababasa na ung cabinet kung meron (double check ko)

try ko yung floating hydrometer. ito sya tama po ba?
]http://fevmarine.com/popup_image.php?pID=6

pwde po humingi ng recommendation ng entry level refractometer na pwede ko bilhin (just in case)?

[roland_0313]

For now yung floating muna kung wala ka pa budget. Mahirap na kung tumagal ng ganyan na wala ka idea sa salinity ng tubig mo. Sa Fevmarine yata less 2k ang refractometer nila

[luckyme]

ok na po ba yung mga nasa php1.2k-1.5k range na refractometer?

safe ba ibabad sa vinegar yung hydrometer para mawala ang saltcreep kung meron man?
kasi ginagawa ko dun nilulubog ko lang pag magtest tapos pinapatuyo ko lang air-dry
di ko rin narrinse with freshwater

[potring]

Depende sa brand ng refracto na kukunin mo budget round 1200 to 1800.... Mine got it from peter 1650 if I'm correct. Try mo din kay fev baka meron sya

Btw hydrometer can be wash by vinegar just soak it for awhile then shake a bit then rinse with fresh water. Also practice washing every after use and before use...
And sometimes when you measure you could see small bubbles attach in the swing arm try to take it off by shaking or use a zesto straw but i think may included na plastic stick mga hydros na nabibili hth

[luckyme]

salamat nga po pala sa lahat ng sumagot
kakauwi ko lang bababad ko muna sa datu puti yung hydro meter..tapos dun ako sa FW tank ko kukuha ng pambanlaw mamaya.. haha

linisin ko na rin sya sa FW twing pagtapos ko gamitin. sa weekend punta ako carti then sa isang reefer kuha na din ako floating hydro pag magulo talaga try ko refractometer.

[jancorwin12]

ginagawa ko is dalawa gamit kong hydrometer dati. isang floating type saka isang dial type. until basagin nung mga isda yung floating type. ngayon, tinitkman ko na lang tubig, hehehe, joke lang po

[seth]

bro nakalimutan atang matanong ito pero gaano ba kalaki yung evaporation rate mo? Kung 2 liters or less yan per day, hindi talaga mababasa halos yan ng hydrometer mo. Unless naka refrac ka or salinity probe.

Isa ring factor yung temperature, kahit sinasabi nila na temperature-compensated yung mga hydrometers sa experience ko hindi rin kasieh, Instant Ocean pa gamit ko.

Anyway, maganda iyan na kung wala ka pang budget pang refrac, pa calibrate mo yung hydrometer mo gamit yung ibang maayos na hydrometer or better yet refractometer.

[luckyme]

hindi ko pa nasusukat kung ilang liters per day..pero hindi naman drastic yung evaporation per day.
ang naging basis ko lang ay yung waterlevel nung weekend at yung water level ngaun.. very noticable na yung drop pero yung SG di talaga nagbago.. binanlawan ko sa gripo yung hydrometer after ibabad sa suka... nakababad muna sya ngaun sa dechlorinated water.. tapos tetest ko ulit


@jancorwin sa laki ba naman ng snail mo sir mababasag talaga yun..haha

[luckyme]

kakatapos ko lang magkuha ng samples paulit ulit ako magcheck para sure.. pero around 1.022-1.023 pa rin
cycling palang naman medyo ok pa (may onti ng diatoms sa rocks and sand) . check ko nalang ulit sa weekend pag may floating type na ako