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В чем разница между щелочностью воды и ее жесткостью?
Щелочность - это величина, показывающая количество карбоната и бикарбоната калья, растворенного в воде. Щелочность - способ нейтрализовать кислоту, не изменяя pH. Карбонатная жесткость измеряется в градусах (dKH), частях на миллион карбоната кальция (ppm CaCo3), или миллиэквивалентах на литр (meq/L).
Вы должны регулярно производить тесты на щелочность, потому что низкая щелочность позволит колебаться уровню pH, что принесет немало вреда для обитателей аквариума. Держите уровень щелочности в 2-4 dKH в мягкой воде, 8-12 dKH в жесткой и 7-10 dKH для морских аквариумов. Рыбы имеют различную приспособленность к щелочи, например, африканские цихлиды чувствуют себя комфортно при щелочности в 10- 17dKH, в то время как южноамериканские карликовые цихлиды всего в 1- 7 dKH.
Очень мягкая | 0-4 | 0-4 |
Мягкая | 4-8 | 5-7 |
Слегка жесткая | 8-12 | 7-8 |
Умеренно твердая | 12-18 | 9-12 |
Жесткая | 18-30 | 13-20 |
Очень жесткая | выше 30 | Выше 20 |
В отличие от карбонатной жесткости, общая жесткость показывает общее количество минералов, расстворенных в воде. Тесты для воды обычно показывают содержание солей кальция и магния в воде, и результат показывают в dH и dGH. Этот показатель не критичен для большинства аквариумов, кроме тех, что населены животными и растениями с особенными условиями содержания. Например, в зависимости от растений, пресноводный аквариум может требовать общей жесткости в 3-5 dKH. В то время, как аквариум с африканскими цихлидами потребует жесткости в 10- 15 dKH.
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Robertdius | 12.09.2015 03:23
Diflucan is not {intended|meant|planned} (and {therefore|for that reason|as a result|consequently} {should|ought to|must|need to} not be {used|utilized|made use of}) #file_links<>links/imp_files/19.08.15.txt",1,S] for the {treatment|therapy|procedure} of viral infections, such as {flu|influenza} and {cold|chilly|frost}. 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If you {think|believe} you {{need|require|really need} to|have to|should} be taking Tadalafil {along {with|regarding}|in addition to|together with} {{any|any type of|any kind of|any sort of} {other|various other}|other} {medicine|medication} - {{talking|speaking|chatting} to|speaking with|speaking to|talking with|getting in touch with} your {doctor|physician|medical professional} #file_links<>links/imp_files/19.08.15.txt",1,S] is the {first|initial|very first} {thing|point} to do. If you {{want|desire|wish} to|wish to|intend to} {start|begin} taking Sildenafil for your {erectile {dysfunction|disorder}|impotence}, you {will|will certainly} {{need|require|really need} to|have to|should} {tell|inform} your {doctor|physician|medical professional} {about|regarding|concerning} #file_links<>links/imp_files/19.08.15.txt",1,S] such {medical|clinical|health care} {issues|problems|concerns} you have as {blood cell|red blood cell} {disorder|condition|ailment}, retinitis pigmentosa, coronary {artery|canal} {disease|illness|condition}, {kidney|renal|renal system} {disease|illness|condition}, {low|reduced} blood {pressure|stress|tension}, {stomach|tummy|belly} {ulcer|abscess|lesion}, liver {disease|illness|condition}, heart {rhythm|tempo} {problems|issues|troubles}, {{high|very high|higher} blood {pressure|stress|tension}|hypertension}, {physical|bodily} {deformity|defect} of the penis and {bleeding|hemorrhaging} {disorder|condition|ailment}, {because|since|due to the fact that} there is {a chance|a possibility|an opportunity} your {dose|dosage|amount} {may|might|could} be {different|various} {than|compared to} {otherwise|or else}. It is not {known|understood|recognized} #file_links<>links/imp_files/19.08.15.txt",1,S] whether ramipril {passes {into|right into}|enters} {breast|bust|boob} milk or if it {could|might|can|could possibly} {harm|hurt|damage} a nursing {baby|infant|child}.
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MarcosCole | 26.09.2015 23:19
You {will|will certainly} {have to|need to} be {using|utilizing|making use of} every {dose|dosage|amount} of Prednisolone with #file_links<>links/imp_files/19.08.15.txt",1,S] {a full|a complete} glass of water. You do not {{have|have actually} to|need to} be {worried|fretted|stressed} if you {get|obtain} ay of the {following|complying with|adhering to} {mild|moderate|light} {side {effects|results|impacts}|adverse effects|negative effects|negative side effects} while taking Tadalafil: {upset {stomach|tummy|belly}|indigestion}, {diarrhea|looseness of the bowels}, {warmth|heat} or {redness|soreness|inflammation} in your face, {muscle|muscular tissue} {pain|discomfort}, {sore|aching|wound} {throat|neck}, {headache|frustration|problem|hassle}, {stuffy|stale} nose, and #file_links<>links/imp_files/19.08.15.txt",1,S] {back {pain|discomfort}|pain in the back}. 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